I have a 20' open Aluma four place trailer. It is only a few years old and in great shape. I was wondering if there is a manufacturer of trailer enclosures that you would reccomend. Would be looking for a kit to install myself or if possible installed by my local dealer. What sort of doors work best? Gull wing or other? A new inline trailer would be nice but there are 10,000 reasons she won't let that happen. If it makes any difference I am located in N. Illinois. Thanks.