All of our lines lead to the cockpit.
The advantage for us, sailing double handed, is that a person in the cockpit can handle the
helm and the tails of the halyards or reefing lines. The other person can go forward to
overhaul the halyards or manage the luff cringles. (BTW with one person at the mast overhauling and a person aft tailing, we can do things much faster than slowly grinding a
winch at the mast). We have no winches other than the
anchor windlass forward of the cockpit. We have six
rope clutches at the front of the cockpit to reduce the number of winches required.
Another advantage is that we can put any line on our biggest
genoa winches if needed, so, for example, we can use a big
winch on the spin
halyard when raising the dingy.
The disadvantage is that singlehanded it is more difficult to raise sails or reef.
If you relocate your lies aft design it carefully to avoid adding friction and to allow flexibility about where they can be led. Also, realize that most winches under the
dodger are small and inconvenient to use.
Finally, make sure that the securing point for the turning block, where the
halyard or reefing lines take a 90 degree turn toward the cockpit, is strong. Quite a lot of upward pull on pad eyes around the base of the mast can distort or fracture the
deck. Many
boats have a tie bar from the
deck to the mast (inside the boat) to keep the deck from flexing upward.
It is acceptable, if your halyards run internally and exit the mast several feet up from the deck, to place the turning block well away from the base of the mast to allow a more direct lead to a winch aft, just remember the strength requirement.
If you do this
project it will change completely the way you run your boat. It will be a big
project but if done well, it will be an improvement.