Oh bugger, that's a right pain. 86kt is pretty serious stuff! I take the forecast deteriorated?
So my question is how achievable was it to get those kind of conditions with the tent in Feb? I read you were planning to arrive early get some heat on in the boat plus dehumidifier and then paint when temperatures and humidity were first suitable and before the boat cooled down with dangers of condensation. How well did that plan work out?
With apologies for the second thread resurrection. (It is Easter after all ...).
I've nearly finished the painting and I can now answer my own question having previously scoured this forum and the internet for answers and with even Mark Ryan going temporarily awol.
The thing I have most learned about painting within tent is that, as long as there is a little bit of weak sunlight then the conditions are good for two-pack painting (temperature somewhere between 15C and 25C and relative humidity below 70% - in fact often between 45 - 60%). I have a fan heater and dehumidifier and these can help in otherwise marginal conditions but are not as influential as the presence or absence of radiant heat from a peek of sun..
Yesterday was the first day I had to abandon a full day of painting. I did several hours in the morning with wind and rain lashing but a bit of brightness kept conditions good. But as it really set in around 2.00pm and the weak sun disappeared I had to stop. I think it was about 7-8 degrees outside the tent with biblical rain and wind at times but even then the ambient temperature in the main part of the tent was 14C and 62% relative humidity which seems remarkable. However my free phone app (Dewpoint Calcule from Play Store) gave a dewpoint of 6.8C. International recommend not painting unless the substrate temperature is dewpoint + 3C and unfortunately quite a lot of the cockpit grp had dropped below 10C (measured on my brilliant Ebay laser thermometer).
But, in summary, even with the Winter / Spring we have had, two pack painting under a deck tent is quite achievable. In fact I think it might be worse to do it in the summer when it would be necessary to increase ventilation. I'm also happy to report that I have only had to remove one small stuck fly and, with all the rain, dust has not been a problem.