Free fishing boat plans, model fishing boat plans, model trawler plans, and blueprints of fishing vessels are under this category.. Trailer trawler 28 is a gutsy little pocket cruiser with potential to cover many miles in the water or on land. her compact size is suitable for transportation over. Free plans? yes, they are really free, hundreds of them. the plans offered at this site are free public domain boat plans. choose a category at the left, choose.