I plan to get an enclosed trailer for next season 20ft or a 24ft undecided yet , an have a few questions. What is the difference between a flat top to a round top? What are the advantages over one another? Also how many people use V nose enclosed trailer? I think it would be great cause it saves on fuel and you can get the side door and run your ztr and walk behind threw it with out having to move mowers out the back of the door.