What works the best to remove yellow ring aroundthe wTerline on my boat fromthe Ohio river? I got most all of it off but still a hint of yellow in some places.... Boat is white....

The WORKS bowl cleaner from the local grocery store ,squirt it on & hose it off ...

on off cleaner, kills everything or paracid hd i think it is, or oxcalic acid, not sure on spelling of last, check to make sure they are fine for paint if your boat is painted, and do not get them on plastics

I boat on the upper Ohio Slimy Grimey mix it with water and use a sprayer I use a garden sprayer it is the best, I use everytime I pull out acid (toliet bowl cleaner and muric acid) will eat trailer paint.

After you get it off using those recommendations above, wax it with Collinite Heavy Duty Paste Fleet Wax No. 885. I started using it this year (4th year boating on the Mississippi River) and it is the best I have used yet. Lasts by far the longest and really helps prevent staining.

If you use ON/OFF make sure you do not have an galvanized trailer!

on-off is about the best i have found.i get the same crap on my fountain.only thing about the on-off.you must wax the area you clean,and the more you use the cleaner the more you have to clean/wax.hope this helps.

Sno-bowl toilet bowl cleaner.

ON/OFF Best!

I 2nd Sno-Bowl then a good wax and buff. Just be ready for the acid sting if it gets on ya, keep the water running!