Get some spectra 12-strand line for your halyard and it will slip through the top cap with no issues. You can go as small as you want (7/64" or 1/8"), but bigger (3/16") is easier on the hands. I'd also recommend a horn cleat on the mast, cheap and can be screwed to the mast. Raise the sail as high as you can easily, make a 3:1 purchase and then use that to tighten the halyard and finish with a cleat hitch to the mast cleat. Then use the tail to tie a cunningham using the deck fairlead around the gooseneck, which keeps the sail attached to the boat during a capsize at a minimum. It can also be tightened to hold the boom down in heavier conditions. I personally tie a second 3:1 in the cunningham so I can crank the boom down if I need too. Get a little can of McLube for lubricating the top cap. It's a silicone spray lubricant which will not harm lines or attract gunk. It's great for the blocks and the end caps if you have an adjustable outhaul. Kevin..