Sharp hatchet!  And keep your leg out out the strike deflection zone!  Or, like Del said build a shave horse.  There are some plans in the "How to's", some are collapsible.  Have fun!  Don't work on the bow when you are tired or grumpy!  And don't get in a hurry!  Also, the only dump question is the one you don't ask!
Hawkdancer