For laminated bows(no glass) I love using heavy duty shrink wrap,the stuff used for shipping and packaging.Just wrap the whole bow tightly(few layers) after glue up and it really puts even pressure on the entire bow with nice tight glue lines.Once the bow is all wrapped up I put it in my R/D form with just two C clamps.Make sure to tape all exposed wood you don't want glue on.
Fast,easy and very effective.