[Chris Burkard]

Yes, the top of the platform is balsa cored. The edge and bottom are solid glass. The platform is hollow and if it fills with water, you are going to be carrying a few hundred gallons of water with you! Whatever you install into the platform has to be sealed properly. I hate the idea of using lags. I would much prefer through bolts with proper backing plates even if you have to drill access plates in order to access the hardware.

Just my $.02!

Good luck and let us know how it works out!