One of the reasons...
I chose North to make a new main for my H28.5 was that the guy I was dealing with in Annapolis was very knowledgable and responsive to many of the questions I had prior to committing to buying. In addition to coming to my boat to take measurements to ensure the sail would not interfere with my bimini, we discussed a variety of issues anyone thinking of buying new sail should consider (i.e., material, cloth weight, battens, reef points, cunningham, etc). When it came to a loose vs conventional bolt roped foot, he indicated that loose footed sails were clearly his preference and they were selling more sails that way then not. He also indicated that it was more of an individual preference thing than anything else and that the only real difference in the two styles was that the loose footed sail was easier to bend on and take off and to adjust outhaul tension. He also alluded to, but did not state so directly, that it was easier and cheaper for North to make a loose footed sail and since they sold at the same price, the profit margin was greater on the loose footed sail. In the end, I chose (it's your choice, not the sailmakers)a conventional bolt roped foot as that is a a style I have used for many years and have never found the design wanting. If my style of sailing and perhaps racing included tweaking the outhaul frequently I guess I would have chosen the loose footed style. I only loosen up the outhaul now and then when the wind is really light and I have nothing else to do....