Ya pocket screws are best for solid wood. They do work in 3/4", but even then I am not a huge fan. There is special hardware made for edge connecting sheet goods, but it takes special jigs to machine the holes.I tried to use them on my camper with 1/2 Baltic Birch plywood. I have not been able to use it on the edge of a board as I got some bulging on the plywood that I was screwing in to. Connecting in to the middle of the board works great. If anyone has any suggestions on how to get rid of the bulging on the edge of plywood I would appreciate it.