Hi DaveS, I use a downrigger ball to anchor in a soft bottom if I have to, but I prefer to put out a drogue to slow my drift if possible. Failing that a folding anchor will do the trick, just keep a knife handy in case it sticks fast.
A pair of reef shoes and a spring wet suit will keep you warm and comfy all day.
Let us know how you get on, what is the target fish in Long Island Sound, Bass?
All the best.
Mike.