I used the same carrier as is in your link last summer on my
Boler. I had it on the tongue with the
battery and the
propane tank. It was just fine for towing although I did scuff the tire cover coming out of a steep gas station. I found that with all three items on the tongue the trailer was awkward to move about in the campsite. Without a propane tank on the tongue I think you would be fine to put your tire up front, however you mount it.
I did move mine to the back this spring.