If you found barrels to fit, and could run an air line to the floating dock, you could sink the barrels enough to get them under the dock (by taking out one of the plugs and letting water in) then use the air compressor to fill them back up again.

www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).