Ron is being polite, I don't know of anyone that would get in the back seat of an '8' with someone that they are not familiar with. Most insurance companies will sign off on dual received in a 6 or 7 as long as it has the same type of gear.
John Clark ATP, CFI
FAAST Team Representative
EAA Flight Advisor
RV8 N18U "Sunshine"
KSBA
I second that thought i wouldnt get in the back seat with anyone!!!!!! You get better training in a side by side seating anyway. Another thought is you need full dual controls to really take or give dual. I no of no Rv-4 or Rv-8s that have brakes in the rear seat. All insurance companies that i know of accept the RV-6/7 for all RV tailwheel training. Best Mike