Kanterj, The round receiver ring of the Kragicon doesn't give much to grab onto. I've seen some wrenches that are basically a U bolt thru a long bar and some that are a hole thru a thick plate split in hallf with two bolts to squeeze it together. I like htis one:
//www.chaski.org/homemachinist/viewtopic.php?t=74084
It might be costly though to have one made.
Also, Do you have a barrel vise?
Salt flat