I have an FX 16 that I use on my C&C 30. I have had trouble with weeds and dragged once after setting and backing down hard. I was off the boat when the wind picked up and my boat was rescued by some VERY nice people in the anchorage. Other than that one event I have been happy with the FX16. I carry 2 backup anchors but they are both danforth types. I am considering purchasing a plough or bruce type but I''m not sure what to go with.