I have a Sonoma and haul my dads 400 Foreman. I have a solution that works (trust me, I broke the window once too LOL). Find a small old tire, like a 13" car tire (no rim). Place it between the front of the quad and the truck bed. the tire will compress and keep it front hitting the glass. Looks kinda redneck, but its much cheaper than buying a trailer, or a back window.