We went up Pendle hill last night to camp. We have no anerometer but predicted Met office maximum winds for 400m in the Dales and Peak district was 75mph. Pendle is over 600m. Mwis predicted higher
We camped on the flat top just upwind of the summit. We could stand and walk with difficulty except in gusts. Putting the tent up was difficult, the soil was poor and rock ridden. I have enough confidence in these internal guys that although we had double poles available we did not use more than one set. We got the tent up, with the wind unfortunately just off straight down the tent. The pegs were pulling out in the wind so we loaded the pegs with rocks. We have set the tent up with rock loops so we could also take the strain off the pegs by putting rocks in the loops. When everything was set and the front points tensioned the tent felt good but it was flogging and shaking continuously. The internal guys were tensioning and slackening with gusts, but mostly tensioned. I cooked in the porch. The front internal guy did not get in the way too much. You ducked under it to get in and outThe rear guy did not cause any problem until, feet to the door, I lay back to pull waterproof trousers on then I had to get under the guy to lay down. In normal use it was not a problem.
The tent survived the night, with no damage that I have noticed. The wind reduced a little during the night. The problem seemed to be the pegging not the poles or the fabric.
Sleep was intermittent because of the noise.
I do not think there was any gusts from above, just because of where we were in maximum wind, as clean as it comes. My suspicion is downward gusts happen behind rocks or on lee slopes.
I think internal guys do a lot to keep the pole hoop in shape.