Try this. Sandwich four 6" x 24" pieces of pvc pipe between two pallets. Great little BG condo and the FH's will spawn on the under side of the pallets. Use a 60 lb. of quickcrete to hold it down. Secondl: Make a pyramid out of three pallets, and use a 60lb of quickcrete on the horizontal pallet to hold this one down also. I love pallets, they're just hard to keep from floating.