Flat bottom half round trailer

[RCP57]

It would be very similar to your half round I would think Calvin. I would have to build a false floor to recess part of the lift, a one off tailgate and all that. I would think $900 or more without a tarp(for KH). The 1/4 round isn't an easy shape for me to form accurately with the tooling I have so it takes a lot of time to get it right. A truck box would be a little easier than doing another trailer though because it's half the length.