I currently sail an old heavy boat. 18' long, 400lbs at least, deep-V hull shape that resistes being dragged through sand. I'm currently 21 years old, 5'10" tall, and weigh 145 pounds. I was 16 or 17 when I bought it, but not much has changed otherwise.

I've always been able to rig, unload, launch, load, and de-rig this boat by myself. That includes getting it on and off the trailer (I must admit- I use the winch a lot for loading), and getting the mast up and down (no gin pole).
Right now it's on the beach mast-up, and all I have to do is get the cat tracks under it and pull it about 125' to the water's edge.
I can even tip it over on the beach to get at the mast-hound or the mast-tip, and then right it (both pretty gently) without assistance.

I don't see how these things are issues for a reasonably fit, healthy guy. I'm on the small/weak side of catamaran sailors!

For sailing, I live in an area with normally fairly light winds. A roomy 18' cat being soloed in those conditions works geat. I can solo it up to about 15 knots of wind before taking the jib off or rolling it up. Toss some crew on there (2 more lightweights or 1 'phatkid') and we're in relative control well into the 20s.

What I'd really like is simply a lighter, updated version of what I've already got. If I had to choose a current design though, I'd go with the Taipan 4.9 because, in all honesty, when the wind is up I still want to go sailing without having to find crew. While the wind is light, I want to be able to crowd on as much sail area as possible.

For me, the F18HTs don't make sense.