Whether you dream of spending time fly-fishing, snorkeling or just rekindling your passion for nature, this 12′ garvey flex boat offers you the opportunity to. Simple and sturdy where the priorities set for this design. the hull is based on our flat bottom garveys like gf16 but our smaller garveys were narrow.. All power boats 16′ long and under. tech support. the best technical support: we will help you succeed! all our plans and kits come with full technical support..