unfortunetly at this time I have to buy all my pipe. In the photo I was experimenting with drilling holes and won't be doing it like the one's on the left. The style on the right is what i went with and I place only 3 at a spot. Mine are hopefully going to be fishing during Pre and Post spawn as the RES I fish on has plenty of Spawning cover (although i am placing some out for that too). These are approx 5 feet tall and will be in about 10-12 feet of water. What do you think? I plan on making some like yours. What length is the pipe and what depth do you place them in?