Sorry, boys... a RHS net alone WILL do more than an ISAAC alone in this case. BTDT.

Of course, the best solution is both; Sam Moore t-boned me hard on the RHS at last year's ARRC 9not his fault, I was spinning cross-track) while I was wearing my ISAAC and have the Safety Solutions RHS net. I was fine, and finished the remaining 16-odd laps and ended on the podium. The car had to go to the frame rack afterwards.

Still, that was better than the time shortly after I got my ISAAC and I smacked the wall hard on the right, no RHS net. Bounced hard off the petty bar with my cranium, not fun. Cut that bar out and installed the center net right after. Well, once the car was fixed, that is.

No, I don't have a containment seat. No decent options in my budget, and the nets are more reliable/robust IMO.