Geminis and the like have their place for sure, but NOT for serious water
sailing. THEY WERE NOT DESIGNED OR BUILT FOR THIS! Sure, some folks do it. It's just like when "as a teenager", I used to stand on the seat of my motorcycle with no hands. You can do it, but it ain't smart!
At the bottom, I will cut n paste from a previous post on this subject...
In your case, you could get a REALLY good design in about 35', for less than $150,000 by going with a custom built...
It just takes doing your homework and learning
what to look for.
My previous post:
The "best" designs and by far the best deals, are frequently in custom built "one offs".
You would have to do a LOT of research
into design, and also learn how to tell a good apple from a bad apple, but a qualified "custom multihull" surveyor
could help you here.
This "custom" boat is an example, and was designed and built by friends of mine in Portugal
. (The boat is NOT currently for sale).
This 43'er was built strong but "light". It has good ventilation, a LOT of wing clearance, modest cabin
, low COG, modest windage, appropriate length to width ratio, speed, seaworthiness, windward ability, easy walkways forward, and full visibility from the helm
Most production cats fall short on many of these counts...