You also have to reinforce the wing to accept the hold down bolts and dowels. If the wing was originally built for bolts then this is not an issue, but if not, you’ll have to modify it. Generally a plywood plate over the trailing edge will be sufficient for the bolts, but for the dowels you’ll have to open the wing and put some 1/8” – 1/4” plywood in for the dowels to go into. These normally attach to the spar, but if you have a dihedral brace then you need to add 1/4” plywood onto the dihedral brace to reinforce it where you’ll drill a hole through it. You also need to reinforce the leading edge with some balsa blocks for additional support where the dowels will penetrate it.

If the plane was built for rubberbands, just leave it that way - they work fine and are time tested.

Hogflyer