I sail from the back. It has 3 disadvantages
1) the mainsheet moves across you as you change from one tack to another. Not a big issue, I just duck, and during a tack the line is almost always clear of me.
2)hard to deploy or ship the centerboard. Sometimes I do this with the paddle, which is awkward, mostly, I wade the boat out to water deep enough to deploy the centerboard and install the mirage drives (and remove the wheels, if I am using them) before I get in the boat. Other times I scooch forward or swing my legs over the starboard gunnel to manipulate the center board,
3)It is harder to control the furling line. I can generally lift it high enough to unclear, but pulling it down far enough to securely cleat it with the sail furled in a stiff wind is not so reliable (and you REALLY DON'T want it uncleat unexpectedly!).
To solve 3 I replaced the furling line with a longer one, and installed a cleat for it on the aft crossbar, as well as fairlead for it (mine is made from an extra cleat by removing the jaws). This works well, with the downside of have more line around your feet.
4) I can't hike out on the tramps or hakes
It has several advantages
1) its drier in the back
2) it seems to steer better, and to cross the wind better when coming about without peddling
3) the bow is higher, maybe a bit too high, but it helps in riding over waves
4) I can reach back to the cooler for a beer
5) I can see the telltales easily
6) I can paddle when the tramps are on
7) I can see more of the boat
It is easier to get on board when I wade the boat out, especially if I have the tramps or hakes in place.