Finally got out today... first outing of the season and discovered a leak, isn't that how it usually is?

I have breathable waders, but the leak is right down on the neoprene booty. A hole has worn almost through the booty from rubbing against the boot. It is small and not in a seam. It isn't right through the neprene but worn enough to easily let water in.
Any suggestions on how to repair this would be very much appreciated?

Thank you.
-Grant