Side hits are worst, HANS does all but nothing in those instances.
I don't know if you recall but I asked your advice on buying a full-halo seat after my crash at Road Atlanta in July. I bought that seat and I think it saved my life…or save me from a lot more injuries. Luckily I had just leaned my head back into the seat and my head smashed up against the halo on impact. I don't think a side net would have provided the same level of protection. That seat is now bent, twisted and heading for the scrap bin.
If anyone is roadracing without a full halo seat, you are taking a risk that is just not worth it.
Looking forward to buying my next one…