Very true David! 30 kn of daytime trade
winds is probably close in pressure to 20-25 kn nighttime squalls. In the case where we had ours up and eventually retrieved it in 37 kn TWS, it was a night squall and my mate looked at the windspeed as we were dropping it. We were told by a parasailor rep, although he didn't recommend it, of a sailor who left his parasailor up in squalls and simply let out the sheets
and guys to release the wind
, till the parasailor was 15m above the deck
, floating horizontally. We were trying this technique at the time and I can tell you, I don't recommend it either!! Although the parasailor was fairly stable, we were still surfing at over 15 kn boat speed with no way to reduce the speed. The boat handled it well but the potential for disaster was immense. While retrieving it, it snapped and shook like a cut snake until secured on the foredeck and I was amazed there was no damage. Since then we pretty much set a limit of around 25 kn TWS and any sign of rising winds above that, we drop it.