I'll put in my 3 cents here, I used around 10 ga. for the board and 1/8 x 1in for the fence. I'm not as young as I use to be and I didn't want it to be to heavy. That has worked on both of them I have built so far. I don't see why a guy would want a real heavy diving board for one thing it could make the disk tip because of the weight, and you don't have any heat out that far anyway. Mine stay level all the time.
And on the eighth day God created barbecue …. because he DOES love us and he wants us to be happy.
Current smokers: Egor (trailered RF) and Easybake (tabletop pellet drive)