I mixed up my epoxy and glass fibers only till it was fairly stiff.
I smeared a small amout in the middle of the base. The duct tape was used to make a hinge and allow me to adjust the bases.
The rocks are just helping me keep them down on the floor.
in 24 hrs I might test the seating but really need 48 to be sure they are glued permanently.

They work just fine we went out and had some great fun but removed the seats to install the carpet. On inspection there are no cracks or any sign that this will not hold up and we did some wild waves. More pictures soon!