I’ve gone a little different route as I’m not a fan of trailers at all. I also found a strap that integrates a urethane “shock” that stretches while the straps do not so with 4 straps the shocks give but the straps remain tight and the pioneer remains in place.
They are called shock straps, shockstrap.com. They come in a couple different weight ratings and have worked well for me so far.
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Im curious why you don’t use a trailer?
Most of us “trailer guys” have looked at a setup like yours and have decided that cost of the fancy ramp system compared to a traditional trailer has less versatility ( uses outside of hauling the utv), is far more dangerous loading (driving up, getting down, operator getting up and down) without factoring in weather.
Not to mention that your rig is now taking the full wind load of your truck plus the profile of the utv. The roof and windows will not last long in this condition.
It’s a novel idea, but the lone advantage I see is that you may not have to store a trailer?
I started with a open 6x10 trailer. After 1 trip across SD in poor winter weather, I quickly realized that an enclosed trailer had great value in that it protects my UTV, acts as storage when parked, and has infinite uses beyond hauling my UTV (I even ice fish from it!)
Once my wife and I returned from the trip, a 7x14 enclosed trailer was in the driveway.