Originally Posted by Ian_st
If these were stuck down with sikaflex or a similar adhesive would it be suitable to fix the feet of an A Frame, perhaps with a couple of screws.
No access to under deck, and not got the skills or experience to resin bond in, or cut in a small hatch.
For lightish loads you could perhaps screw/glue these down to the deck and bolt a part to the central thread. For safety and/or for heavier loads you'd need more. I have a bench secured by bolts to a number of big heads which are themselves held beneath marine ply pads which are screwed through into the deck. Works for me as I can unbolt the bench when needed and just have the wooden pads left behind.