Ive been to all the places being discussed, For me personaly Dumont is better than glamis. Taller steeper dunes Hp really matters there. Dumont isnt as large of an area but the quality of the dunes is better.
Go to pismo in the summer, Ride some, watch some girls on the beach and ride some more. I drive everywhere out there in my 2wheel dirve truck. Up down and aaround everything, But ive been out there driving a bunch now.
Some tips, Air way down, 7-10 lbs, Keep your momentioum, and when you stop face down hill. The beach has a 15mhp speedlimit obay it, The drags are whooped out, but not as bad as ollds.
Go there kick back and have fun