No personal experince, but a quick search found 5 ramps available.
Launching a trailer sailer that is just as easy to carry to the water, I would be looking for something remote and out of the congestion.
Maybe something like the Williams Bay ramp.
If it were me, I would deffinitely stay away from downtown Lake Geneva.
That area can be a zoo.
Courtney is My Hero
If a man is to be obsessed by something, I suppose a boat is as good as anything, perhaps a bit better than most - E.B. White