I say just blast the whole trailer, prime and paint/clear it and call it good. Paint it white, it will hide a lot of the imperfections better than black, red, etc. If still someone looks underneath your boat and points out the pitting on the bunk mounts, i'd tell them to have another beer and chill out.

Aluminum or steel? saltwater use? I've tried many spray liners on truck beds hydroseeder tanks and other applications and line -
x still holds up as good and most times better than the rhino, speedliner and others that look like gorilla snot.

FYI, Rhino Lining has 2 products, the thicker softer one and the harder "line X" like version. So basically Rhino is a one stop shop. Yes the product is amazing and has some great uses. But personally I feel its the best in a truck bed, or Jeep tub "floor".

My Friend owns once of the largest producing shops in Northern Michigan. Not because of truck beds though. He coats everything from kevlar bullet proof vest inserts to windmill blades!

I coated the outside of my Jeep (not from his shop but a very reputable shop in wisconsin, CPV) and every time it touched something off road it practically JUMPED off the sides of the Jeep. Then you grab the edge and just peel it off. Or water would get under it and rust. It turned out to be a nightmare.

Could it work on a trailer, yes, but once its compromised theres no way to "touch up" or blend it properly.

Rhino like every other company has low pressure chemicals that is the thick application. The thinner application is high pressure. You can touch it up easier than paint.

It prepped correctly you will not have water get underneath.

As an alt option Lowes has a deck coating that is pretty impressive.... I was thinking about lining my trk bed. Stuff comes in 20+ colors and seemed almost rock solid. It was on a big display in the paint section.

If your Jeep had issues with the product adhering properly then you had prep issues. If you can grab any of these products and peel them off with ease, then you have a prep issue.

I've been spraying these products professionally for 15 years now. I'm amazed at the short cuts I've seen when it comes to prep.

Buck

dont know what it is in comparison to Rhino, but plus one on this stuff fro decks. We used it on our steps, no more slipping, works great. can be used on concrete, and a bunch of other stuff., might be a hard application to use on steel though.

As for the trailer, I would use whatever is cost effective for you to make it look nice. In the end its a boat trailer.

I think it is a great idea. Matter of fact I was thinking if I buy another Myco in the future I was going to talk to them about doing a steel trailer with Line X color on the whole thing. I think as Buck and others have said IF the prep is done RIGHT you should be good. Good luck. And if you do it post pics