I took the same size axle saddle (piece welded on the axle that sits on leaf springs), purchased at some local place. Took a block of wood and fit it inside of it, and cut the same contour as the saddle. Welded a small piece of pipe for the bottle jack end to fit in. So, pretty much the same thing as an axle saddle, in reverse. It fits right between the axle u-bolts and works well.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)