John,
The 2-33 for example has a max weight limit of 1040. Approximately 640lb of
that is Iron so that leaves you 400lbs to split between the two of you. You
have to see the WB for the actual ship you will be flying, ships that have had
work and paint jobs add up weight.

It really boils down to specific weight and balance figures for each sailplane.
If you plan on taking lessons in a 2-33, and you say you are 232lbs
clothed..extra radios, gps,water bottle.....your instructor can weigh no more
than an honest 168lbs.

All that being said, I've seen more than one pair go up that combined couldn't
possibly weigh 400lbs or less!

Some gliders will be a better fit than others.. you'll have to find out whats
comfortable for you.

Good luck!

Douglas