We installed pin locator holes fore & aft on the rock rails at the optimum angle for the screw jack...the jack pin is heavily knurled, and grips very well inside the pin holes...and the jack base swivels to maintain contact with the ground during the lift. The jack pin also works in the recovery loops in both the front & rear bumpers for additional lift points. Since the rear axle has a fair amount of droop during lift, I may have to strap the axle to the frame for rear tire removal depending on the terrain...since we are installing a front suck down winch, this will not be a problem with the front axles.
With a 20v cordless impact driver, I can jack up the rig in 8 seconds...remove the lug nuts (the driving nut on top of the jack is 3/4"...same as the lug nuts), replace the tire, tighten the lug nuts and drop the rig off the jack in under 4 minutes...without breaking a sweat.
I must have angered the fish gods sometime recently...I've missed the steelhead run here in WA...and missed the last summer run of ahi in Hawaii...and will miss the next ahi run this winter as well, as I've been too busy traveling attending to a bunch of simultaneous projects...but I will correct this soon...