Send zoner "Sprint" a pm I have a boat cover made by him and it is great. His daughter runs there upholstry shop called Performance upholstry in Tucson, his name is Dave Novitt and his phone number is 520 296-7369, Tell him Rick from the zone sent you.
Like Hoffman said, they dry rot and tear in this weather. Unless your gonna garage keep it, I would not go overboard with a boat cover. AZ sun is brutal on them. After wasting money on a nice one that didn't last more than 2 seasons, I just buy some cheap tarps and bungee them down tight.
The custom cover that came with my boat seperated at the seams. Apache Awning sewed this back together using Gortex thread. They were saying this stuff is the best and the fabric will rip before the thread breaks.
I can't speak for Apache Awning because I've never seen their covers but, I have a Dean's cover and the thing is super thick and reinforced everywhere. It's a custom travel cover that fits your exact boat so, it's tight. They are pricey but, in my opinion you'll go through enough of the cheap covers to pay for a Dean's.
Not to hijack the thread but he caught 6 greenies (while we had our meeting) fishing robo worms ds in the wood/sticks across from the landing. One 2-8 and the rest unders. He came in to the landing after the meeting and showed me the fish in the livewell and we released them there at the landing.