You don’t need r.boards. It’s kind of a UK thing; a badge for folks with no sand technique.
What you need is a lot of experience taking your TC on the dunes
and lowering the pressure on your tires to get the needed floatation; and a surefire way to get them back up.
And the right size wheels and tires for sand help a lot.
2020 Ford F-350 XLT FX4 4WD SRW SB SC 7.3L Godzilla Gas TorqShift 10R140 397 amps dual Alt dual batts Frnt Dana 60; Rr Dana M275 E-locker 4.30's 4580/4320/4066# payload 7243# curb wt. 11,300# GVWR 5-er prepped. 2020 Northstar Laredo SC, 12v compressor fridge, cassette, 320w Solar sub zero insulation.