He shoots off the shelf of a child's recurve type bow. I've fletched lots of plastic vanes, but am new to feathers. Really need to know what size feathers. The arrows he has now are just the cheapy ones that came with the bow so no help there. I'm going to set him up with the Goldtip Falcons cut to maybe 22".No way to fletch helical so will have to go with an offset. Still looking for suggestions on glue, size of feathers, and brand of feather if it matters. Thanks!