This may be redundant info.
Rider safety was paramount with the E-Z-HOOK streamliner project.Some of the designs were rejected on account of stability issues.A good read.And this sort of testing should be conducted on a case-specific basis for each design.
'best to crash inside a virtual reality,or safety of a wind tunnel.
Here's the link
https://www.rbracing-rsr.com/downloa...samwheeler.pdf