Update, 2 layers of 3/4 inch epoxyed in, will glass in today. Man that 2nd layer of 3/4 was a bear, I ended up having to use a fork lift with some weight on it and lowerd the forks on top of the wood to help push it down. also got the floor glassed in, used 40oz woven looks like what wellcraft used, it took 3 gal of resin to wet it out.