Hi everyone. I was wondering what everyone would recommend for a rear anchor for my boat. It is an older 19' fiberglass cuddy with 165 mercruiser. 98% of the time I am going to be boating in the north channel of lake Huron around manitoulin island. I bought a 14lbs danforth anchor for the front with 200' of 1/2" line and have bought 100' of 3/8" line for the rear but unsure what style anchor to go with. The three I have been considering are a 20lbs navy anchor, a 16lbs river anchor or a 10lbs collapsible anchor that is sort of like a grapnel anchor. Any insure from anyone would be greatly appreciated. Thanks in advance for any advice