I too have the exact same trailer as Ted, except I used a 25% off coupon :-p.
Either way though, just came in to say that I only have a simple plywood sheet on top, not a fancy deck like he has. The kart fits just fine that way, just have to put it on the trailer backwards so the wider rear doesn’t clash with the trailer’s fenders. Doing it this way allows me to still fold the trailer in half to put it away in the off season.
This is actually my second trailer like this – I used to have one with a deck almost exactly like what Ted has that I used to haul my F500 with. That trailer worked great for several years even though my total weight was probably pushing the limits of the trailer’s load capacity.