I took the family out fishing on Wednesday with the Pak Shack3 on Lake Champlain. I use the original Pak Shack when I go alone on the windy days, and that holds up well in 20mph winds. This is my second season with the Pak Shack3, & 3rd with the Pak Shack. I really like these portable shantys. I also have a 4x8 folding and a traditional large shack. I have not been out in the really windy days with the Pak Shack3, however, in 10mph winds it held up well last year. Someone must always remain seated on the windy days. On Wednesday it was nice weather so we used tip-downs & flag traps, my wife + 2 young kids and I used the shelter briefly to warm our faces and to have our lunch. The sun, and our body heat was all that we needed. I brought the 1,500 BTU SportCat heater along, but we did not need it. One thing that I just noticed on that day for the first time was the velcro flap vent above on the back wall. I sat on 5 gal pail over one of the 3 holes, while the kids & wife sat comfortably on the folding bench seat. The cup holders & the side pockets are very handy. I highly recommend these portables, very fast to set up and very light. Extremely portable. I've left positive Pak Shack reviews on this site in the past. I'm impressed with them...