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Jun11-05, 03:44 PM
P: 14
buoyancy.... maybe need to trap enough air at the base of the target to offset the force. You could increase the size of the "cross" and make crossed pontoons, maybe from 8-12" sonotube, it should degrade (BTW are you in saltwater?). Paper mache (sp?) the ends closed. To join the tubes in the center, each tube is cut halfway thru creating a lap joint. Join the same as the ends. You could bolt the target to the tube before sealing it up.