I do not think a 7ft will be long enough for your ATV if you want there to be any extra cargo room at all. I have this Triton All Aluminum trailer and it is 8ft long and perfect for one machine with very little extra space.
http://www.tritontrailers.com/wp-content/uploads/2015/06/AUT853-WEB.jpg
I LOVE this trailer! It is so super light and tows great with the Grizzly on it with even just my car. Its the AUT853 model (8' long x 53" wide). I went with the upgraded bifold ramp for less wind drag too.
It depends on what you want to put on the trailer along with your ATV. And if you're not gonna carry extra stuff very often, I'd plan to put it in the truck and opt for the smallest workable, quality, lightweight, low maintenance, and easiest-towing trailer you can find.
http://www.tritontrailers.com/wp-content/uploads/2015/06/AUT853-WEB.jpg
I LOVE this trailer! It is so super light and tows great with the Grizzly on it with even just my car. Its the AUT853 model (8' long x 53" wide). I went with the upgraded bifold ramp for less wind drag too.
It depends on what you want to put on the trailer along with your ATV. And if you're not gonna carry extra stuff very often, I'd plan to put it in the truck and opt for the smallest workable, quality, lightweight, low maintenance, and easiest-towing trailer you can find.