I want to make a few Crappie Condo's and add a little more in the way of stucture to a spot. I have access to a lot of scrape 3-4 inch PVC pipe but would have to purchase most of the smaller diameter stuff like 3/4 inch. I realize that both would likely work just fine but was curious if diameter would make any noticable difference and hold fish better. I would appreciate any opinions...