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Free Shipping On All Allison GT-20 Boat Covers! Hurry! Limited Time Offer. Available in continental U.S. only. UPS Ground shipping only.
Verify the boat style & length most similar to your Allison GT-20:
Conventional Tournament Ski Boat Style Covers
Conventional Tournament Ski Boat
Fits:
  • Conventional tournament style ski boats with I/O stern drive or direct drive
Conventional Tournament Ski Boat with Tower Style Covers
Conventional Tournament Ski Boat with Tower
Fits:
  • Conventional tournament style ski boats with I/O stern drive or direct drive
Conventional V-Hull Runabout Style Covers
Conventional V-Hull Runabout
Fits:
  • Bowriders
  • Closed bow style runabouts
  • Low profile cuddy style boats
Ordering Notes:
  • For boats with euro style integrated swim platforms and curved glass windshields use the Euro style cover
Accommodates:
  • Bow rails up to 10" in height
Deck Boat Style Covers
Deck Boat
Fits:
  • Deck style boats
Accommodates:
  • Consoles with or without windscreens or windshields
  • Outboard and I/O stern drive models
Deck Boat w/ Ski Tower Style Covers
Deck Boat w/ Ski Tower
Fits:
  • V-shaped bows
  • Accommodates side consoles
Deck Boat w/ Walk-Thru Windshield or Side Consoles Style Covers
Deck Boat w/ Walk-Thru Windshield or Side Consoles
Accommodates:
  • Blunt-nosed bows
  • Windshields & side consoles
Euro Style V-Hull Runabouts Style Covers
Euro Style V-Hull Runabouts
Fits:
  • Bowriders with euro style integrated swim platforms and curved glass windshields
  • Closed bow style runabouts with euro style integrated swim platforms and curved glass windshields
  • Low profile cuddy style boats with euro style integrated swim platforms and curved glass windshields
Ordering Notes:
  • Overall centerline length listed includes swim platform
Accommodates:
  • Bow rails up to 10"
Euro Style V-Hull Runabouts with Tower Style Covers
Euro Style V-Hull Runabouts with Tower
Fits:
  • Bowriders with euro style integrated swim platforms and curved glass windshields
  • Closed bow style runabouts with euro style integrated swim platforms and curved glass windshields
  • Low profile cuddy style boats with euro style integrated swim platforms and curved glass windshields
Ordering Notes:
  • Overall centerline length listed includes swim platform
Accommodates:
  • Bow rails up to 10"
Euro Tournament Ski Boat Style Covers
Euro Tournament Ski Boat
Fits:
  • Euro style tournament ski boats featuring molded or integrated swim platforms
  • Competition ski boats featuring molded or integrated swim platforms
Ordering Notes:
  • Overall centerline length includes swim platforms
Euro Tournament Ski Boat with Ski Tower Style Covers
Euro Tournament Ski Boat with Ski Tower
Fits:
  • Euro style tournament ski boats featuring molded or integrated swim platforms
  • Competition ski boats featuring molded or integrated swim platforms
Ordering Notes:
  • Overall centerline length includes swim platforms
Jet Boat Style Covers
Jet Boat
Fits:
  • Popular jet style boats
Low Profile Ski Boat Style Covers
Low Profile Ski Boat
Fits:
  • Low profile sport boats
Ordering Notes:
  • I/O version fits boats with I/O stern drives, jets, or bracket mounted outboards
    • Accommodates:
    • Boats with or without windshields or windscreens
    • Boats with or without bow rails
Modified-V, Performance Deck Boat Style Covers
Modified-V, Performance Deck Boat
Fits:
  • V-shaped bows
  • Accommodates side consoles
Tri-Hull Style Covers
Tri-Hull
Fits:
  • Tri-hull or similar style with wide bows
YouFit™ - You identify the boat style & cover length that works for your boat model lisited above. « Back To Top

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About Your Boat
Make: Allison
Model: GT-20
Years: All
Beam: 6' 11"
Length: 20' 5"
Style: Please choose
Free Shipping On All Boat Covers!

Hurry! Limited Time Offer.

Available in continental U.S.

UPS Ground shipping only.
Why Buy From Us?

Largest collection of patterns anywhere.


Many colors and fabrics to choose from. Free fabric samples upon request.


1 to 5 year Warranties

Call us at 1-800-589-0599

Other Features:

Built to last.

Trailerable Options Available

Everyday low prices

Free shipping

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Please be aware of the following order dates below to have your items have the best chance of delivery by December 24. Shipping options apply to in-stock items only, and not made-to-order products such as boat covers and bimini tops. Mail handlers are extremely busy this time of year, therefore we cannot guarantee delivery before Christmas of any items. For the most up-to-date shipping information, please refer to the estimated delivery time specified in the shopping cart and checkout process.

HOLIDAY ORDERING CUTOFFS

Ground Delivery TUE 15th UPS Ground for most in-stock items
2nd Day Delivery SAT 19th Two-Day Shipping
Next Day Delivery MON 21st One-day Shipping
Same Day Delivery WED 23rd Email Gift Certificates
Order as late as 3pm EST

Sitewide Sale

Save
$20, $30, $50
or More!

Use promo code BLKFR09 to save extra 5% Off

(Sale good thru 29Nov09. Excludes outboard engines, power units, inflatable boats, and gift certificates)

Our Famous Odd-lot
Boat Cover Sale
- Boat Covers - PWC Covers -
- Bimini Tops -

On Sale
$44.95 to $79.95

If you need a quality cover and are willing to have a slightly odd fit or extra flap or two of fabric, one of these odd-lot covers may be ideal for you. These covers are in a variety of boat styles, lengths, colors and fabrics and can make a good, useable storage cover for a boat of similar or smaller size. (Sorry, no returns)

Hurry, last years’ sale sold out in 4 hours! Plus this year we have select Bimini Tops too!