I've been making a lot of board bows over the past year, mainly because I haven't had as much time to get in the woods and make staves. As of late I've also been having a hard time finding really nice boards, and wonder how much grain runoff people tolerate in their board bows. For the record, the bows I've been making range from 58-65 inches nock-to-nock, draw up to 55 pounds, and are backed with rawhide. I've been using primarily hard maple boards, but might look into other woods if I can find decent boards.