Therefore it seems I am a fool for flying an aeroplane outside of gliding distance to land without a liferaft, even though the machines I fly have no capability of carrying a liferaft.... hey ho. There I was relying upon lifejacket and ELT (the latter being the single most important factor in shortening the SAR time significantly according to a former Bristows SAR pilot friend of mine)....
Cheap (and multi-use) immersion suit? = wetsuit under one's flightsuit...