We cruise full time and have a loose footed main. No reason to have slugs from a load perspective. The foot is not a highly loaded area. In fact you design draft in to the bottom of the sail to account for the attached foot. Been sailing/cruising with loose footed mains for 10+ yrs now.. but I also buy laminate sails which love sail control flexibility to optimize performance.. after all 'fast is fun' even when cruising.