Question about solar panel rack.

I think the regular brackets that come with the panels are sufficient. If you wanted to go the extra mile you can make sure you get at least one hold down screw into a rafter/trust or some substantial wood. Or you can also use "well nuts" that actually work like a rivet in the plywood when the hold down bolt is cinched up. Putty tape or non leveling goo under the bracket and self leveling sealant over the top. Don't think you'll have any problems of any kind.