Backcreek.. If you sail singlehanded, make a habit of just using a 100% jib (if you have one) and continue to use your regular sheeting track arrangement. The center-block idea will not give proper sailtrim in any conditions nor at any angle of attack. Using a non overlapping sail will greatly ease the tacking by avoiding hangups and minimizing the amount of sheet to be pulled through.
Your C&C will move OK in all but the lightest conditions. I'd avoid the unnecessary complications associated with the various self tacking arrangements. Most boats that have such setups are designed with that in mind from the get-go.
If your primaries are reachable from the helm, it's a simple matter of coordinating the turn, and handling the sheets yourself. - and you'll get more exercise to boot!
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)