Have Aluminum side wall pool that has developed a few small corrosion holes in side wall, less than 1" in diameter - have Aluminum side wall material to make repairs - can I rivet patch on inside over hole? Most info I've seen shows bolting with SS bolts and nuts - but for a small repair like this, I'd think rivets would suffice?

Also - purchased the geo-textile mat to go under the liner but was not planning on using the foal cove - instructions don't show using mat with a sand cove - suggestions? Or will I need to use the foam cove?