My thinking is that on numerous occasions I need to let the sheet out substantially, and find I am sitting on a section, so I get up to let more out and find I am standing then on another portion, and then having gone through that, find it is caught around the back of the tiller, or hooked on the autohelm. The procedure could be a cartoon if it wasn't for my wrath and explicatives - and this is compounded if there are guests on board. Recognizing those pragmatic circumstances, and how easily my anchor line comes out of its bag, to have a sheet bag (and I have seen some) makes a lot of sense. I'll try it next weekend or when the boat gets back in the water, which ever presents the more suitable circumstances.