Lot of suggestions for board bows, and there are lots of reasons why, such as time, cost, etc. BUT...if you try a couple boards and can't get it to work like some guy I know from the mirror every morning, there are lots of ways to get good, functional bows with very little time or expense using small trees or saplings. I find that, for me, working with a real no-kidding tree is much easier than figuring out what someone else has done to the board. Either way is fine and has advantages though.