I'm thinking we'll probably wind up with a plastic can, 5 gallons, only fill it up about half way, & carry it in the stern of the pickup bed. That should keep it from sloshing high enough to escape
I was in hopes someone knew of a "baffled" type that would negate the sloshing action from, stopping, turning, etc.
I can't siphon as needed due to the same safety/antitheft factor on my FX4 as on RK's Volvo...there's a baffle in the way, presumably to keep fuel from sloshing out during off-road travels.
I'm sure the baffled/theft proof fuel filler necks were mandated by some do-gooder in D.C. intent on protecting me from myself.
In any event, thanks for the response & suggestions!!!