I'm trying to design an A-frame that will lean over the opening for the catwalk ladder to help hoist some heavy blacklights. The A-Frame will be supported at its base by blocks, from the top by aircraft cable. My problem comes from the fact the i need to find a way to attach the wooden blocks to steel grating. They need to be strong. The only idea i have thought of would be to take some wood stock about 6 inches long and make half of the wood the exact size of the slots in the grating and the other half larger, pretty much creating a wedge. Do you think this would be strong enought to hold about 60lbs of lighting instruments along with a great deal of pressure from hoisting?