I'm very pleased that my suggested remedy worked!!
Didn't have any doubts that it wouldn't any way.
After you finish washing the boat and you dry it well, wet a cloth first with some warm water, then spray liberally small sections on the baot at each one time with ARMORALL (not the mat but the shining version) polishing agent use the wet cloth to rub it in. Wait until is dry and for the REAL
shining effect get a dry cloth wipe it and you will not believe your eyes!!
As I said the effect will last for a few days (4-7) the most if you have the boat continually in the water. Otherwise it will last a bit longer. You also see that ARMOL acts as water repelant on the plastic.
If you try this let us know what you think!!