I get the point of the Hans devices; however, I come from an ATV/MX racing background also and often wondered if a simple neck brace that is used in MX would be sufficient. Not bashing the Hans, just always seemed a bit over the top. The point is to stop your head and helmet from flying forward in a crash and breaking your neck. The mx neck brace is designed to do a similar function AND prevent you from breaking your neck from impacts from multiple angles. I can tell you first hand ATV GNCC and MX crashes are pretty brutal and fatalities are often in the GNCC series.
Link to an example:
https://www.rockymountainatvmc.com/r...5-neck-brace-p