Rick wrote:
After a beaching with Katrina and the refloating with Rita I am left with a
boat with a brown scum smile on the side of the boat. The residue is from
mud mixed with oil and diesel from the sunken boats that were not so lucky.

Question is cleaning the hull? My thoughts are open at the present time and
am wondering if the groups experience base can help? Right now the boat is
in the boat yard so access is fairly easy.

There is a product called "Super Tuff". It's essentially oxalic acid.
This stuff will remove just about anything. Note: wear rubber --lots
of rubber-- as this stuff passes right through your skin and can ruin
your liver and kidneys