Are you guys keeping secrets??

[KrazyKarl]

I have been wiping & cleaning with a pressure washer using soap after every outing with my boat & the crud on the hull just kept getting darker & darker. I boat in the dirty Ohio river & I can see crud building up on the hull causing a bath ring around my boat.
After winterizing I tried just about everything to clean but nothing worked, a buddy told me to use polishing compound & a drill with a bonnet on it to buff it off. Knowing that's abrasive I didn't want to start that. I had tried the Star Bright hull polish but that wouldn't cut the crud. I talked to a woman in Walmart that said she & he husband have a boat & she buys this for her husband to use. This stuff is wonderful, just spray let it cut the crud & wipe it off.
This stuff is so great everyone needs to know about it.

 

[ASH]

"The Works" toilet bowl cleaner, liquid not gel, has the same active ingredient and cost $2.99. Works exactly the same.

 

[BillK2632]

I have been wiping & cleaning with a pressure washer using soap after every outing with my boat & the crud on the hull just kept getting darker & darker. I boat in the dirty Ohio river & I can see crud building up on the hull causing a bath ring around my boat.
After winterizing I tried just about everything to clean but nothing worked, a buddy told me to use polishing compound & a drill with a bonnet on it to buff it off. Knowing that's abrasive I didn't want to start that. I had tried the Star Bright hull polish but that wouldn't cut the crud. I talked to a woman in Walmart that said she & he husband have a boat & she buys this for her husband to use. This stuff is wonderful, just spray let it cut the crud & wipe it off.
This stuff is so great everyone needs to know about it.

View attachment 136194

That's an acid based hull cleaner, it either has Oxalic or Muriatic acid in it - toxic stuff, don't get it on your skin, trailer and try not to breath the fumes. However, when it comes removing the brown stains on a white hull, that's the only thing that will really do it.

 

[firecadet613]

Iron out spray was my go to...

 

[Little Ducky]

Iron out spray was my go to...

Likewise. When I bought my 98 290 DA although it was clean the rust stain was a pain in the butt until I discovered the magical properties of Rust-Aid spray from Goof Off. While swimming I can just spray and watch it disappear in front of my eyes. No scrubbing at all.

Magic I tell you.

 

[Brett H]

No telling how much money I have spent over 40+ years on various products marketed as "hull cleaners", that performed poorly. I now use Barkeepers Friend for the bathtub ring. Heard about it on this site from @carterchapman . Cheap ($3) and extremely effective.