Welcome to the list Ron,
the Red Max product and 3M wax are two very different products that both produce a good shine.
The 3M Restore and Wax product was designed for use of
fiberglass boats and it will do IMHO a really good job of cleaning up and shining up your trailer. You put it on like wax and then use a power buffer with a wool bonnet to take it off for the best results. You can apply it & take off by hand with a micro cloth although it will not do as good a job. Once you have done the 3m product put a couple of coats of wax on it and all you need to do after that is add a new coat of wax each year. 3M has good instructions on their website.
The Red Max product is a whole different product and its actually a protective coating that was designed for floors....a whole different process for application and removal. Read through the thread here called "this is not Poliglow" as a number of folks have given good instructions as to how best to apply. As you will see from that thread it is a still a pretty new approach to getting a good shine and still appears to be some unanswered questions as to how many years and under what conditions it will last - a couple of folk have noticed yellowing a lot of others have not - some one noted that they got a rock chip that started a bit of peeling (although I dont recall if they have since updated on that problem) others have not had any problems to report and are very happy with it.
Two very different chooses.
In regards to your leaking fan best to start a new thread under the help section for that one. As Donna says its best to pull it out and reseal with Butyl putty no caulking.