i think the way ken approaches it is probably the easiest, by using a limb thickness thats consistent, then attaching the handle and pinning it with dowels. this is a trick for board bows that flex too much for a glued on handle to normally stay. for me, replication is the easiest way to learn something, and then after i get something successful i just add the changes i want to. as with almost everything involved in making bows, patience and perseverance are key.