The last video is how a lot of my trips turned out, lol, even if I wasn't the one being towed. hopefully you can get that thing put back together and make it out at the end of the month.
Man Flat river looks flatter than I remember. Although it has been 10 years since I have been there. Get that ride fixed. Forecast calls for rain which means the grass will grow and need to be cut. $$$
Upgrade the clutch. You have to remember the transmission is designed for a street bike and not a buggy and has a wide ratio used for the street. Pulling around all that weight and turning over two tires in soft soil will fry it in a heartbeat. I don't know what gearing your using but if its close to the stock CB750 gearing you'll just keep frying them.