HARD WOOD BLOCKS
This almost sounds like the wing attachment system that is used on the SIG Sumthin Xtra. Make sure you use hardwood blocks behind the root ribs and epoxy them in. DO NOT use Rubber band to hold the J hooks together.
THIS is a goofy ( Sorry is only word I could think of ) :spinnyeye way to hold your wings on. We use Electrical wire ties to hold them on and we are talking about the short wings of the Sumpthin Xtra, I do not know how big your wings are. Remember this,, if your wings pull apart you start to have really big ailerons LOLOL :drowning:
The DIBO