With all the shutterbugs around here and the number of years I've raced the boat, I seem to have a photo for everything. This is an old one, taken before the refit in 2009-10. I've moved some things around, the deck is now Greystone, etc.

My winches are in the stock location but may appear to be farther forward in the first photo because they are self-tailers on Harken bases. They are taller than the original winches in the second photo. A couple comments:
Note the white "skirt lifter" in this photo. Everybody should have these. They are easy to make and do a perfect job of skirting the foot of the genoa on tacks = no need to send your 200# bowman to the low side at the very moment you are trying to power out of a tack. (And in my case, I AM the bowman.)
The biggest problem with moving the winches even slightly aft is the mainsheet catching on them when gybing. I gybe "all standing" since I'm busy gybing the kite but I think most of us do anyway. I found that with the self-tailers, if the feeder knob thingy on the top of the winch wasn't in exactly the right place, the mainsheet would catch on it, almost guaranteeing a broach on the new board in windy conditions. If you have a dedicated main trimmer (whatever that is) you shouldn't have a problem if they help the sheet across on gybes. However the next owner of your boat may curse you for moving the winches.
Bob J.