I have a 12' flat bottom jon boat.  It is a montegomery wards from the 1970's and it is in good shape just doesnt look pretty.  It looks extremely dirty.  I would like to clean it up a little bit and maybe build a platform in it.  I have looked at many of the posts on here of custom jon boats and decided I would under take the task.  First thing is what can I use to clean up the aluminum?  I will post some pictures later in the week.  

with a brush and some elbow greece LOL but seriocerly

hmm....well I have a brush, but I am short on elbow greese.  Do you think you could spare some? ;D

cant remember if its cabelas or bass pro...probably both but you can get some aluminium cleaner

This may help,  I work in an upholstery shop, and we use a stain remover/hand cleaner called M30.  Im pretty sure you can get it at Dollar General, so stores like Walmart would most likely have it too.  Get the big chunks off with the brush first.  Then take your hand cleaner and either a scotch bright pad, or a brillow pad, which ever scratches the least, and swab it on, and let it soak in for 5 min or so.  Then go back with the pad, and scrub it.  The stuff works wonders as long as you don't scratch the heck out of the aluminum.  To save time, work in 1ftx1ft patches.  Swab 1 patch, then 2nd, then 3rd, and go back to the first and scrub it.  Have several old rags with you to wipe off the dirt you scrub off. And it would be best for the water you fish on, to clean with soap and water after you clean the stains off with the cleaner.  I have used the stuff to clean antique chairs and loveseats, metal, poster board with crayon and pencil marks, just about anything that is filthy.  Just don't tell anyone, we don't want our secret gettingout.  OOPPPPS!