Was recently taking out 15 black poplars on nightshift, was about 50' with a colleague about 10' above me on the neighbouring tree, after mutual agreement, he felled out a top leader which in theory would pass me if i swung round the side of the tree, the hinge was correct and the weight hanging past me, I gave him the thumbs up and he made the cut...........but a dead stub stopped me moving and a friek gust of wind, I took a 15' top on the shoulders and back, it took hemet, bust my 200 off the lanyard, and a couple of days to feel better(lots of bruising and friction burns from the branches) worst thing was there were 6 grounders feeding a chipper so no one actually saw it happen, with exception of my colleague, who swung over just to make sure everything was ok....lesson to be learned there, take a few minutes to get above the top, and dont be so confident in each others actions , it could have had serious consequences.