I agree with the rest, the chain is an important part of your anchor set up. Two years ago I switched my Danforth to a Fortress aluminum anchor and I wouldn't go back now. The Fortress offers all the holding power and maybe more and only half of the weight to retrieve. You also need to make sure you are letting out enough rode for the depth you are in. Usually 5 to 7 times the water depth for a normal wind day, 20 fow = 100-140 foot of anchor rode.

GF