hi Alan it is not to hard a build good plans and book on step by step building, plans not to scale though it is first trawler i have built,only thing i found time consuming was the metal parts there is 100,s of them. mine not done yet ,had it in bath at weekend get right ballast,putting electrics in this week ,and final tidy up,and that be it,just wait to till ice in local pond melt and try her out. regards hugh.