I am going to build Bolgers Micro Trawler, and am adding 4 feet to the aft. I had planned on joining the plywood with a joint if 3 inch and 6inch tape. I planned on cutting a 3 groove in the ply and taping them together, then feathering the groove out to 6 inches and putting the 6 inch tape on. My question is every one is talking scarfing, and I am wondering if the taped joint is as good, worse, or better? Also, would it be lots more work than it is worth?

Thanks, Stephen