Below is how I usually do my glue ups... I've got a straight 2x8 that I put into my vise with a series of evenly spaced 2" diameter holes for the clamps. On top of that I mount one of several interchangeable 2x4 arcs depending on what length of bow and what bend I want to use. In this case, it keeps the 12" handle area perfectly straight, and then bends 2" away from the back for the length of the bow limbs. Then titebond 3 and (9) "F" type clamps. Done. No rubber bands to smack me in the face, and no fortune spent in excessive clamps.
Oh, yeah, duct tape is placed over the mold to keep the bow from sticking. Works much easier and better than plastic wrap!