And now for a more serious reply...
Your initial mount sounds correct. Some bike shorts or supportive
underwear (I like boxer-briefs) will be helpful in holding your
"equipment" as far forward as possible. As long as your "equipment" is
out of the way, their orientation in regards to the seat is
unimportant.
Depending on the seat you use, your sitbones (the bones on which you
rest when sitting on the uni seat) should contact the seat near its
center, slightly to the rear of the seat. This can be uncomfortable
during longer rides; there are two ways to adjust for comfort:
1) Get a seatbase / post setup (such as a Scott Wallis seatbase, or a
rail adaptor) that allows you to tip the seat... as you raise the front
of the seat (and drop the rear) gravity will help your sitbones contact
the seat closer to the wider part of the seat, at the rear. This gives
you more cushion around your sitbones, hence, more comfort.
2) "Scoot" back towards the rear of the seat. Don't tilt your pelvis
too much 'cause you could disrupt your posture and incur some lower
back pain after some distance riding. Again, sitting on the wider part
of the seat will give you more comfort. You may feel a little awkward
while riding this way, but you can get used to it after awhile.
As far as seat height is concerned, it's a trial and error process for
me. Raise the seat until it's just a little "too high" for you to ride
on without falling off. Then lower the seat just a smidgen and see how
it feels (with a little ride). Repeat this process until you're
comfortable. Your leg should be fully extended at the bottom of the
pedal stroke.
Now to "remember" this seat height, straddle the unicycle with feet on
the ground and see how far up your stomach the seat stands. Mark the
seat height on your stomach with a permanent marker, or as Harper
recommends, with a tattoo. This will make future seat adjustments
quicker and easier. Make sure to note the wheel and crank size next to
each height marking, as the seat height will change accordingly.
Good luck!
--
maestro8
Those are my principles. If you don't like those, I have others. --
Groucho Marx
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