I have two of these bows for my 5 and 3 year old kids. They do pretty good with a little help but they struggle nocking their own arrows. The rest is a plastic flipper style with a top finger to hold the arrow onto the rest. I would love to mount whisker b's on the bows but I can't tell if there is a threaded hole in the riser. The current rest has a plastic piece which goes through the riser and sticks out on the other side. Worst case, I was thinking I could drill out the plastic and just use a bolt and nut to hold a rest on. If anyone has any experience with these bows and maybe changing out the rests please let me know. Thanks!