Almost in tears, but will be ok

[Steelerville]

Not really, it kind of depends on how much you gotta clean. I used a 1/3 cup of bleach and about 2Tbs of comet and mixed the baking soda till I had a nice thick pancake batter

 

[njmr2fan]

I know boaters use bleach extensively in cleaning their boats of mold and mildew. I get it. It works great, but bleach is a strong base and combined with sunlight it's effects on the waxed thread used in the seats is not a great idea. They'll eventually disintegrate. I'd probably spend some extra cash and get a dedicated mold and mildew product (starbrite, gteen bean boat greed lightning, I personally like wet and forget).

Diluted Ammonia can be substituted for bleach, baking soda and vinegar is also a good cleaner.
With the polished gel coat I don't know if I'd want to use abrasive powdered cleaners. Magic eraser is also an abrasive that will dull out polished surfaces.
Like they always say, try first in an inconspicuous area and check your results.
Good luck, I rooting for a full cleanup. Sounds like you really deserve a weekend to de-stress and enjoy your boat. Heck if we were closer I'd buy you a case of beer and be there with some rags and spray bottles.

 

[rkluck]

I know this must have been frustrating! I am sure you will get it cleaned up. I had a much smaller version of this but it ended up well!

 

[Glassman]

Another member reported using the Zep line of products available at Home Depot - with much better results than the Starbrite product and MUCH cheaper!

http://www.homedepot.com/p/ZEP-32-oz-Mold-Stain-and-Mildew-Stain-Remover-ZUMILDEW32/100619250

Good luck