I think of two places that would suit a motor home and your Polaris for the 1000, Erindera on the west coast south of Ensenada and San Felipe on the east side. West side the weather is cool and Erindera is a fishing farming town with not much flash but good toco stands and really great scenery north of town and a bunch of good spots for watching the race. The RV facilities are limited but there and alot of people who camp along the beach north of town but the access roads are rough. San Felipe is warm and has the small beach resort thing going for it. It has clubs , good food and you will find alot more race stuff there as alot of crews set up there for support. The famous canyons and washes are just south of town and there are alot of places to play. There are plenty of RV parks and the towns malacon is within walkin distance to most. During race times no one will notice another atv running the streets. You will see alot and of police and military but unless your doing something really stupid the most you will get from them is a smile or a wave. I have always thought that stayin in one place for the race is best , but what would be fun for you is to set up in San Felipe the week befor the race and scout out places to watch it go by , go back to Ensenada for contingency the day before the start , its really a scene, back to your RV spot in San Felipe and hop in the Polaris to watch the race. If you are wanting to head south after the race goes by , do not try going south on highway 5 south of San Felipe in your RV. Its quicker and a lot less wear and tear to go back to Ensenada and south on #1 . A sand car would work and there are some dunes around San Felipe , but whats more important is reliability , so take what you can count on the most. Loreto is my favorite place in Baja but its a ways south but can be driven from SF in a long day. Its 721 miles south of the border. Hope this helps.