The reefing system you are using is the way to go JGM , however, I would suggest a topping lift or boomkicker to help you out when easing the mainsail halyard as you reef.
the topping lift makes it much easier and safer , as I have one hand free for the expected unexpected.
Mark the halyard above the halyard cleat - I align it with something permanent on the mast, I use the lower sail measurement band .
Hi Jim,
Was the length of the reefing line supplied with the Jiffy Reefing Kit long enough for your adjustment?
Ahmed.