Hi
Rubber bands will work well-,number 11
I still use them on a trainer i love to fly and flying RC 21 years-,24 planes to fly
Change them after a days flying or wrap them in a paper towel if glo fuel is on them,they break ,if they are going break ,when putting them on if they are bad
I ALWAYS use 8 pair and four that cris cross pattern over them-,to hold those on
My first plane was an Avistar
IF or when your wing lifts off its seat it feels like a radio glitch ,-not a good thing
We need to keep the wings on the plane-as much as is possible-LOL ! ! !
When you get good at building and flyingyou could consider building wing mounts
Unlike most guys I like metal bolts and blind nuts ( through hardwood blocks ) to hold my wings on
Some like the nylon snap off kind of an idea
I just never liked that idea
Best Regards Tony