Did the old Whirlwind have bungee cords for centering the forward wheels as did the H-19? Running takeoffs in the Hog 19 were a treat....until the front wheels started shimmying....just like that shopping cart you refer to.
Squirrel....complicated techincal discription of the situation I described in Bubba-ese. If one were to lock the brakes on a wheeled aircraft...then execute a run-on landing....the resulting friction of the macadam surface acting against the tire (tyre) would remove a bit of the vulcanized compound which the tire (tyre) is made of....thus leaving what is commonly known as a "flat spot". Then upon releasing the brakes....and ground taxiing away....one might then hear a "thumping sound" as the flat spots impact the surface upon which the aircraft was rolling on.
212man.....I usually did a wheels locked landing when I forgot to release the parking brake after the rig takeoff. And I was young in those days.
Also...touchdown auto's in a Chinook were great sport....zero ground speed touchdowns were a real challenge....but not as challenging as touching down at 60 knots GS.