Does your halyard double as your downhaul line? This is the case on a lot of boats, especially those not rigged to go racing. The downhaul is generally regarded as a set and forget item on these boats, also. In this case I recommend against fuzzy jacket line and go with the smooth, since it will have less friction going through those little tiny blocks they use for the downhaul. You will only handle the line when you hoist/drop the main and downhaul it on the beach anyway, and you can wear some gloves for that. Very low stretch line helps here, too since you'll lose downhaul tension as they day goes by otherwise.

Jimbo