We ordered a cover from Classic from a parts dealer in the Maritimes that fit our Diamond perfectly.... only lasted 3 winters in Regina due to the lovely wind but that's another story. I recently saw that this site that has covers on sale right now... prices look pretty good and has free shipping. ...here's a link so you can check it out for yourself. https://www.rvcover.ca

The main concern would be placement of weight behind the axel which could cause fish-tailing and loss of control. That said I do have a 5 lb propane bottle mounted on the wall on one side, low and behind the fender, a Dometic CFX35 fridge in the galley and I've never had any issues at all with loss of control.... the only time I know the trailer is there is when we go over a bump or have to back it up.... it tows beautifully. Thanks Todd, I will drop you a line this week... Cheers!

Hi Dale, thank you! yes, I picked up one of those too thinking I could use or modify it somehow to fit.... I still may see if I can find a welder who can use it welded rather than bolted to the frame. If I come up with a good solution I will share it here. Cheers!

We have a 5x8 Diamond with the full size front box as well... talked to Steve when we bought it and he was only installing under the frame at the time.... I wanted a little more clearance so I declined the spare and bought my own. I've been looking at ways to mount it as well and like you I had concerns with mounting it on the wall at the back... don't like the idea of the wall being constantly vibrated by a 30 odd lb weight. I've been thinking about having something constructed that supports the weight, secures the wheel and is welded to the frame.... hmmm wish I had a "welder/fabricator neighbour " 😉

We purchased this one from Classic 2 years ago and have been using it over the very long winters here in Regina.... sadly when I removed it a few weeks ago I found the top material has disintegrated in spots and has torn. I blame the horrendous winds we have to endure during the winter storms.... so, I guess we'll have to order another one this fall. This cover fits and works wonderfully BTW I would recommend it.

The photo is obviously not my Diamond in the Rough but an image from the net to illustrate the bolt.

...and the propellor?

I picked up one of the J locks from Princes Auto when it was on sale.... I would say the weakest point is the lock itself... it's pretty flimsy pressed metal and a quick search in another section found a sturdier version of the lock itself - MasterLock make some as do Gorilla Lock I believe. I also have a longer shank lock that goes through the plates to lock the jack in place too.... wouldn't be that hard to cut with a good bolt cutter but I figure anything that slows them down and makes them rethink the time involved to go through all the locks can't be bad. I've also see people using the very heavy-duty chains to lock motorcycles... Kryptonite make some... probably others. They're supposedly hard to cut with a bolt cutter so the lock itself becomes the weak spot. If you happen to be in Princess Auto check their surplus section for a Coleman Silent Hitch Pin Lock.... similar to this https://www.ebay.com/itm/5-8-Locking-Silent-Hitch-Pin-for-2-Class-III-IV-Receivers/392171446400?epid=535987584&hash=item5b4f3d6080:g:08cAAOSweDdaxqaS they're usually on for about $20.00 and help stop the rattling of the hitch in the receiver. Another option is GPS tracking devices.... small self-contained trackers that can be hidden yet show the location of the trailer. SpyTech sells some versions If some low-life jerk wants to steal the trailer they will.... we can only slow them down and track the trailer as they drive it away.

The lock looks interesting... where did you get it? And.... OK, I'll bite... propellor?