Gooduck on getting rid of the crud. Took me almost a month.
For dirt/crud/and all that wonderful stuff my wife sells some white pads in her store that work wonders… Slightly abrasive - I’d say about as abrasive as >2500 grit - but on finishes that are dull from use anyways and especially on plastics, these things are just the bees’ knees. Think over yonder they are called Magic Eraser Multi Purpose Cleaning Pad from Mr Clean.
Just make em wet and rubb it all off… Foamed melamine I think they are. Restoring the shine to a plastic afterwards if need be is also not too much work…
Sadly we took a pass on that red Old Town… Not just for the damage and the price which wasnt right but also the weight of the thing… Set our sights on finding something within our budget that tracks a bit better and I can lift onto the car without making my back go poking hot needle sensation