Hi and Welcome.

I cannot really help you. I've not heard of Shockite, but of Shotcrete, gunite, pebbletec, tile, etc. The one thing you should do is check out the builder's rep. Check Better Business. Get references from him, not just of new pools but of older ones. From what little I know, some maintenance after 5 years of hard-sided pools is pretty normal, but excessive cracking, peeling, sections breaking off, is not.

Good luck!