Allison 20

Listed on 1/13/2026, this well kept 1978 20' Allison GT is a rare find in performance trailerable classic speedboats. 200 hp Mariner outboard, Tires just replaced on her single axel trailer and only Aviation gas has been run through her engine. Just cleaned and detailed, she is ready for her next owner to enjoy! Come take a look asap! Photos taken on 1/12/2026. Located in Annapolis/Crownsville.

A 1978 20-foot Allison is a classic, high-performance bass boat known for speed, with models like the GT20 offering serious performance, often needing engine work or interior refreshing in current market, and valued for its heritage in the bass boat industry. These boats, while requiring potential maintenance on older models, are sought after for their unique hull designs, capable of high speeds with the right setup. Key Characteristics

• High Performance: Allison boats, especially models like the GT20, are famous for their speed and efficiency, utilizing unique hull designs for better performance.
• Classic Bass Boat: They are considered pioneers in the bass boat market, with roots going back to the 1960s when Darris Allison developed the first high-performance fiberglass bass boat.
• Condition Varies: Expect older models to need updates, with common issues being worn interiors or aging outboard motors, but they remain desirable for enthusiasts.
• Engine Power: Often paired with powerful outboards, these boats can be set up for significant speed, with some owners reporting impressive performance.

 In essence, a 1978 20' Allison is a piece of bass boat history, a fast hull that's a great project or fishing platform for someone looking for classic performance.