The TRT just recieved a report that last year approx. 260 tickets were wrote by the Imperial County Sheriff for non compliance of having a permit upon arrival to the ISDRA. This year so far, there has been approx. 826 tickets wrote for non compliance. That is over three times more tickets than last year and we have a lot of the season to go. The tickets are I believe $100 for the first offense and $200 for the second, $300 for the third and $300 for any after that. I'd say they are being much more agressive on enforcing the recreational permit this year or less people are complying.
Avoid the hassle and get your permit before arriving at the ISDRA. If you don't have one upon arrival, you are taking a chance of getting a ticket and having it cost you much more than the cost of a permit. If you are buying a permit at the ISDRA, I wouldn't waste any time getting it after arriving. They are definately writing more tickets this year.
Link to information on Recreation Permits,
www.blm.gov/ca/st/en/fo/elcentro/recreation/ohvs/isdra/dunesinfo/permitinfo.html