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
Spider cracks are absolutely common on Gemini's, visual defect only.
... 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 ...