Re: Anchor weight for 1650 Ib boat...
Since danforths fold flat I think they are easier to store but in any case he has a roller so that takes care of that. If danforths grab they can hold quite well but the problem is a) they can be hard to set, and related b) they don't reset well by themselves. Any type of hard bottom and they tend to just slide across. If you want less expensive, I'd go plow or bruce, best holding in lots of different conditions, go mantus/rocna. At least my .02c.
And yeah, I had to anchor in a marina which had bad protection from the wind with about 40 feet to spare all around me (if that) and I slept pretty horribly waking up every 10 minutes to make sure I wasn't dragging. For what it was worth I never did and had a little more faith in the anchor after that.