This red skeg fits most "covered" (not single skin) Sevylor boats. This includes the Colorado, Hudson, Scirocco, Adventure, Adventure Plus, Canyon, Madison, Alameda, Yukon and Pointer.
The red skeg does not fit single skin Sevylor boats the Tahaa, Tahiti and Riviera. These boats are not supplied with a skeg but a "Rear Directional Skeg" is available as an add-on to assist with paddling straight.
The Ottawa, Minnesota & Charlston use a different design of skeg.