I've been sailing my Cal 20 with regular headsails (working jib, a racing jib, and a genoa). Since I singlehand, I've rigged a downhaul, to avoid going forward to drop the sail (plus a sailbag attached to the headstay to store the sail when down).I'm wondering if it's time to invest in a roller furler. And, if so, which one?One consideration: I'd like to be able to rig my racing jib the regular way from time to time, even if I'm sailing with the furler most days.And a last question: will modifying my 150 genny work ok, or should I buy a sail specifically made for the furler?Any tips, mates?