I've made 3 red oak board bows. Two from a 1 x 2 that was 72". And one from a 1 x 3 that was 72". With the 1 x 2's, I left the boards full width until 15" from the end. So, of course I had to taper the belly as well. With the 1 x 3, I made a pyramid bow. So, no tapering of the belly at all. The easiest bow, by far, is the pyramid bow. There is very minimal tillering involved, as opposed to the others. IMO, if you just want to get a quick and easy selfbow under your belt, get a 1 x 3 and make a pyramid bow.