I installed Harken's small boat single line reefing system. The kit recommends 5/16 line to be used. Does it need to be that big? I have a Hunter 21 ft daysailer with about 150 ft2 mainsail. The outhaul and cunningham is 3/16, so why not use that for the reefing system? Well that's what I bought anyway, 3/16 sta-set, before I opened the kit and saw the recommendation for 5/16. The 3/16 runs nice in the blocks, looks good on the sail, and I'm not worried about my hands, but is it inadequate in a blow? Need reassurance or advice to use heavier line.Thanks,Dan