After further review, it seems that the swims should be "headless" to fit the rig perfectly. Also need to have no hookslot to stay on well. I think most using it have settled on a 5" swim or thereabout.

I am thinking a swim similar to the Big Hammer.
Or....headless swim shad...

What do you guys that have used the A rig think?
These a-rigs are cool.....
Jim