[Zeke]

I think the trailer modification is called "beaver tail" not dovetail. Whatever.

Don't heat AL to bend and don't even think about red hot steel as an ala logy. AL does not change color even as it is dripping onto the floor.

Rocket, that setup looks good except it would be better if you ran a 2 x 10 out to the right in the diagram. Another 6' ought to get you a real gentle slope.

Then you get to an autoX venue that doesn't have enough room or enough flat area to unload. You always need more of what's good.