I have not done very much glass work but my main complaint with poly resin is the fast set up time. Every time I have used it I feel I have to rush to get it spread. Sometimes the rushing compromises my finished product.

don't add so much hardener, what i use doesn't need hardener to set up but i usually add just enough to give my 30 min work time per batch. the resin i use has to be refriged to keep stored otherwise it will set us in the gal jug over time.

Got fish box cover apart and found out it was cored with 1/2" plywood squares. I have a piece of pressure treated 1/2" that has been dying in my shop for 3 years that I am going to use for that and now I am thinking that the gas tank hatch will get that also and just laminate one or 2 more layers of glass to make up the difference in thickness. Skools, there is no local boat builder here in the mountains of VA so I can"t get the deal you get on resin. Also I thought I would use epoxy resin because of the better adhesion properties would make a stronger fish box cover as I was able to save both upper and lower halfs. So basically I am just glueing that back together with a piece of plywood in the middle. thanks for any suggestions.