After watching Bigrenna's survival vest video on the web page I wondered what the average time a pilot can expect to have to survive after a crash.
According to this source the average time from last known position to rescue is 31 hours.
https://iflyamerica.org/safety-search-and-rescue.asp
IFR: 13 hrs 6 mins
VFR with Flightplan: 37 hrs 18 mins
VFR without Flightplan: 42 hrs 24 mins

