What I would do..and it's not too costly is clean it up the best you can using whatever will take it off. Steel pad or whatever, and apply bedliner material to it. Cuts down the sound, water proof, cooler, easier to move about when in it. Just a thought. My Son and I did his in about a hour..but it takes two, believe me.

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I'm a Sagittarius...If you don't want to hear the truth then don't ask my opinion!
Then again I'm a "Vacuous Asshat"  

Political Correctness:
A doctrine fostered by a delusional, illogical liberal minority, and rapidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. 

 Century 25' Mirada 350/260HP "ISLAND LADY" >>>> Calera, Alabama    My Pictures

Bleach will clean off algae and That Purple Stuff will remove oil and grease.

Wear gloves and use a scrubby pad with the chemicals above.  After you get the boat clean, give it a coat of Simonize paste wax.

Ajax will scrub off a lot of bad stuff. 

If you plan to use it in salt water, tiny bits of steel wool will leave rust spots everywhere.  It really makes a mess on fiberglass.  I don't know about aluminum but I don't think I'd use it.   Brass wool is suggested by West Marine.  Kinda expensive, though.

Life is too short to catch little fish.

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