When i bought my
gemini, it had leaks. I had no issue
tracking them down and stopping them ... boat was 100% leakproof eventually. Same as other
fiberglass boats really.
Spider cracks are absolutely common on Gemini's, visual defect only.
Bilge ... I cleaned my bilges with javex and a mop - flood, scrub,
bilge pump then shopvac remainder, so you can do someting.
But no
maintenance ... well you'll have to make the decision, and really bad smell is often nearly impossible to remove. So that's your call. as usual balance
price / condition with your desire to do
work.
btw I really loved my Gemini - it sailed great, and we thought it was really comfortable. Really good in the
price range I thought. Just my view ...