New Double drop with open center.

It even has hold downs for outrigger planks.

 

If want to be really cool

Have them build you some neck supports while they are at it

Take square tubing and have them drill holes about every 2-4” and then weld flat stock on top with the outer edge rolled up. Then have them bolt/weld some large tube to the outside of the frame so the smaller tubing side up and down vertically have them drill a hole about 4” down perpendicular to the frame - then get a large hitch pin to put through the holes (these hold up the adjustable tubes) and the neck rests on the top inner tubing.

You won’t have to use a wooden block to support the neck when detaching and WHEN you drop the neck on the ground you can use the supports to lift the neck using your air and a block on the ground.

Hopefully you can visualize what I am describing. If I could draw it would be easier ... good luck

 

Here is a picture of mine when I had them

 

I have crusher screen fit into the openings that works great for chain/binder/block storage. It is welded on to the bottom flanges (from the factory).
OTR guys may not be able to leave chains and binders on your trailers, but it works great for us.