i have searched but found little. im curious, say your building a stitch and glue boat held together w/ epoxy fillets and 6oz tape. does the tape really do all that much? i can see using it on the outside corners where no fillet is possible, but on the inside it seems redundant, at least for anything under about 12'-14'. i made a couple samples just fillet and fillet w/ 2 layers 4" 6oz tape, i couldnt tell the difference when i broke them. how do designers calculate the strength of a joint? help me understand why we do all the extra work. thanks!