There is a place on Harry Hines that let's you take all you want. It's next to the Boy Scout office and part of some state social program. Looking for a number/name.
Take some of the boo and tie/tape to your pvc and put in the lake. The boo will attract fish and when the boo breaks down, you still have the pvc condo to hold fish.
This is how I do most of my piles.
LiftSaver Trolling Motor Mounting Bracket - Patent Pendingwww.liftsavertmmount.com
Works with MG Xi5, Xi3 and MK Terrova, Ulterra, PD V2 and Riptides as well.