just curious afterseeing Bob Ls post on building a drifter. becasue my dad built a 17' all aluminum drift boat 4" draft, powered by a 440cc jet ski motor mounted in the center. it does well over 20mph but is not meant to be a rocket ship. just get you around. the design is original and it works pretty well, just has some misc things to finish. but roughly what is the ball park these are worth?