Hawk, a shot of chain attached at the
anchor serves three useful purposes. Chafe protection from botom debris, oystershells, etc.
Shock absorption at the
anchor as the boat tries to tug it free.
Some ability to reduce scope depending on the amount of chain.
Chain isn't easy to deal with. If 10 feet of it is the best answer for your situation, I'd suggest you shoot for places where 5-1 scope is acheivable and go ahead and rely on the plow
anchor.
Have fun out there