I installed a viair with tank on a previous truck and was very happy with it. Pricey but convenient and easy to use. I always have a trailer at Oceano dunes so a generator and pancake compressor also has worked well. I don't have a need for air that often now so I use the less convenient pancake compressor as it serves use at home and on the road and with the trailer space is not an issue.
On a side note they are having a meeting and vote in July that will probable result in closing about 30% of the Oceano Dunes riding area and decrease the amount of campers allowed by 30 - 40%.