Depends on whom you ask
On my C-22 ('82 swing keel), which I sail nearly 99% alone I lead aft: my main halyard, a main down haul (to get the main down that last foot or so before putting on sail ties), and main tack reefing line. I also have a furling jib and a boom kicker which due to its expense may not really be a good choice for everyone except that it does prevent you from accidentally stretching the leach of the main as would occur when you fail to secure the topping lift. I also lead the main sheet forward to a swivel block and cam cleat mounted on the forward cockpit side just aft of the keel cable winch.Is all this necessary? Perhaps not.However, for myself there are just too many uncomfortable situations in the area where I sail which make all these alterations highly prized.There are C-22 owners who eschew these items and I think rightfully so.I think the best answer is to determine for yourself and the areas in which you sail just what alterations, if any, you need to perform and as time and money permit.Quite simply, I think it is safe to say there is considerable difference between the expectations of sailing in a lake versus sailing in the ocean, even if just somewhat offshore.Nevertheless, in my opinion, leading lines aft is more important for getting sails down than for raising them. If conditions are bad to begin with, you may not wish to go out single-handed. However, if you are by yourself and are caught in a sudden blow, you will be much happier being able to secure everything as quickly as possible.