I've done a few models with improvements since my first one. Open up and round holes on end with dremmel. Remove/round all flat surfaces for bullet shape. Nothing sticking out on inside of tube that will bang against bait.
Drag rope is now THIN #600 test Dynema attached to main body with three point harness, kind of like a drift anchor harness. Holes on underside not too big for toothy critters to see through. Black 5200 caps in place, with couple flat zip-ties for insurance(I'm rough on gear)....I forget I'm even dragging the thing.
