A unique website dedicated to fishing information from Florida's Northern Big Bend. This includes the area from the Econfina River west to the Apalachicola River
Read about it on another forum, saw some at Lowes, bought a can for < $3.00 and made a little paste (its like Comet without the grit), killed the stain in a few seconds.
"Atticus Recommended"
I have also been known to be a bar keeper's friend.
I bought a can a few weeks back, but haven't given the boat a good clean since. Should give it a try sometime soon to clean blood off the boat. Wal-Mart sells it also.