Slight stringer rot at drains - best options for sealing?

[hobiekanobie]

I fill up on the way home after every trip, there are only about 2 or 3 gas stations that carry rec90 on Indiantown on the way home from the ramp. I hate to say it, but the cheapest and easiest station to use is the chevron/now Mobil by the Publix in the farms. The rest of the gas and diesel is about $0.30/gal more expensive than in town. They have also been known to have water in their tanks and it is a very popular station for credit card scanners so I always pay cash. Don’t fill up on the water, I saw it over $5/gal once and almost choked