Damn ... Glad to hear no one was injured.
IMO, your trailer was heavier than your truck. Especially, since you're pulling a "toy hauler" w/ UTV in the back. The combination of a quarter-ton truck pulling a heavy load, the rough road conditions in the area (a lot of dips between MT State line and Crow Agency) probably contributed to the wreck.
What happens in trailer sway; is the trailer starts going faster than the vehicle pulling it and ultimately tries to pass the tow vehicle. Once the "sway" starts ... there is very little anyone can do to avoid a wreck.
IMO, your trailer was heavier than your truck. Especially, since you're pulling a "toy hauler" w/ UTV in the back. The combination of a quarter-ton truck pulling a heavy load, the rough road conditions in the area (a lot of dips between MT State line and Crow Agency) probably contributed to the wreck.
What happens in trailer sway; is the trailer starts going faster than the vehicle pulling it and ultimately tries to pass the tow vehicle. Once the "sway" starts ... there is very little anyone can do to avoid a wreck.