Yuma South to San Luis Sonora, cross into Mexico make the first left available it is like 2 streets into San Luis, well marked. Go about 2 blocks and make another left which will take you back to Sonora Highway 2, turn right or East and follow it all the way out of town. In about 5 miles from San Luis center you will see the BillBoards for the new highway, it is marked El Golfo as well as Puerto Penasco. Turn right onto the access road. You will travel about 7 miles before you get to a round about look to the left and you will see the caseta (toll booth). The toll is 94 pesos there is a bathroom there that is pretty decent. Take this ultra straight ultra smooth road for about 35 miles and you will come to a "t" in the road (Watch your speed on this stretch the Federales are active) Take a left towards El Golfo in a mile or so you will see a West Bound check Point slow down and follow instructions they probably wont have you stop. Continue on another 28 miles or so and you will come down the hill towards El Golfo. There is another "T" before you get to El Golfo (if you get to the OXXO you have gone too far) Take the left at the "T" and follow it for 1 hour 40 minutes and you will pass Laguna Shores, continue straight, cross the next road and stay straight you will see the condos of Sandy Beach straight ahead drive straight to them on the brand new road it is a great - pretty and painless drive. ENJOY!