I have a 5 x 10 aluminum flatbed trailer that I bought new mostly for hauling my sidecar rig long distances like to our summer place. But it hauls all kinds of other stuff as required, plus will haul two solo bikes. The one issue has always been hauling two bikes. I mounted the wheel chocks so that handlebars would not interfere. I probably could have staggered them to prevent that. But then you are squeezing between the bikes and if somethign happens, a bar can go into a tank and that would be a BAAAAAAAAD thing. So, I've wanted to put a pair of outriggers on the front to give me a better purchase angle for the front tie-downs. I've been noodling on this for several years since I rarely haul two bikes. Well, there is a 1 day event coming up and looks like I'm going with my buddy Jake. He has a big Ford Transit that he modified with an aluminum "cell" he fabricated to haul his big street bikes. You mount the bike in the cell and then it cranks into the van with a winch. Very slick. only, it limits the room in the van for other things, like our small vintage bikes. We have done two events using his van and it's a PITA to get two bikes in there. He's 84 and I'm 72 and we just can't move, contort and lift like we used to.
When I got Jake's email asking if I wanted to go to the Unsprung Moto, I told him I'd already decided to go. So that was my incentive. All the noodling and overthinking how to modify the trailer went out the window. I dug out two pieces of bed frame (some of my favorite material for projects like these) and made two outriggers that bolt to the front of the trailer. Got 2 1/2" 300lb rated eyebolts at TSC and got everything fit. I put a coat of silver paint on one side yesterday and will do the other side today. I know, I should have bought aluminum angle, but I decided that free material was a better route. Besides, if I get anal about it one of these days, I can always by the angle and just replace the steel with the aluminum.