I was gonna say "Chrome that sucka!" but JB beat me to it.
I agree a Coast Guard version would be good and even sounds good, but I'd like to see somebody photoshop the paint scheme first to see what it would kinda look like.
How about a Action Force, Homeland Security, or NY/NJ Port Authority version? Maybe a new sub-team called 'Harbor Force' that patrols areas where the USS Flagg or Jane goes?
How about a Navy fireboat version? Paint it Navy gray and whip up a water turrets. The rocket pods could be used for signal flares while the depth charges could be used for deploying sealed HazMat containment stuff (like netting with bobbers to contain oil spills). The elevating side cannons become water cannons. The mini-bike can be replaced with a Corps jet ski.
How about a 'being repaired at the dock in the Everglades before Destro and Firefly steal it' version? Since you said these aren't complete one could be made to look like it was being fixed.
-Panels could be opened
-Something hot could be used to make bullet holes and sharp edges
-Paint small white circles on the skirt to simulate bicycle tube patches
I picked up an incomplete WHALE last year and have been wondering what to do with it. About a month ago I was looking through some Russian/Soviet War Machine type reference books and saw the Russian Navy is the world's leader in the use of combat hovercraft. I plan to turn mine into an Oktober Guard vehicle (surplus GIJOE stuff sold to foreign countries reference in the bio).