Marc Martyn wrote:I may change the wheels to pneumatic tires which would roll over rough ground easier.
I was thinking about that (I love this kind of stuff, and it is a slow day at work).
What about this...
Take the bottom out of your cart, put an axel from one side to the other and mount a couple small bicycle tires INSIDE the box. That way they wouldn't stick out and rub the toon when rolling, and you can mount them to the height needed to still fit under your canopy.
Then remove off all 4 casters and take two of em (the ones that turn, not the fixed ones) and mount one front/center and one rear/center. But mount them a little higher up than the bicycle wheels so when level the bicycle tires are holding the whole works up, but the casters are dangling. But when tilted or left alone one caster or another are keeping the works from tilting too far.
(Kind of like those metal plywood carts you see at Home Depot or Lowes).
That way you have the benifit of bigger diameter tires over the gravel and rough stuff, but still maintain your low clearance. You only have two wheels on the ground in rough stuff and use balance as your friend. Because you can spin the whole thing 360 in one spot, you increase your maneuverability, and the casters enable you to roll it as is when you are in your garage or driveway!:cheers:
You see, since I am not getting any younger each year and my pontoon boat seems to get heavier each year, I thought that I would take the time to deal with the problem. 
. no it is the stable-ist thing ive towed in a long time. it is bouncy (the toons not the trailer)so dont leave any lures in the cup holders 
as they wont be there when you get there. i run two straps front to back on the toons and the canoe has its own straping. other than hitch chatter you dont know its there.
