Burr Point Happy Canyon Airstrip

[John Morrow]

I may have this crazy opportunity to fly into the Happy Canyon Airstrip (8 miles up canyon on a low bench south side of canyon wash).
Questions:
Burr Point Road. Is it currently 2WD sedan driveable to stage a car?
French Spring Exit: Considering this with entry into Sams Mesa Box. Looks straightforward and findeable.
Sams Mesa Box Entry: Anyone had luck with Kelsey's Cattle trail route? Suppose the entry further west off twin Corral Flat could be an option.
H2O: any info for both canyons appreciated.
Place in Salt Lake to buy USGS Quads?
Thanks,
John