It has been very frosty for some days so looking for adventure, I went to a flat area I know of where there is often smooth black ice. The site is a large ash carpark and I was pleased to find the ice there as expected. Getting up on the 20inch pegs with the new mountain bike tyre feet, I set off onto the ice and promptly fell flat. Using my car to get me upright again, I tried again using very short steps to keep the stilts vertical, but afer only about 4 steps I went down again. I then took off the bike tyre feet and went back to the quad-skate toe stops. I set off onto the black ice again using very short steps and managed about 30 steps before a gust of wind sent me flying. After a long crawl back to the car, I tried that again and managed to get right across the ice to safety. Coming back to the car I had gone about 20 steps when either through loss of concentration or a particularly slippery bit I fell yet again. Enough for there today. The result of that adventure is that although bike tyre feet may be good on mud they are impossible on ice. I must devise a way of changing the feet to suit the terrain about to be walked. Stats for today. Total time on stilts about 45 minutes. 4 falls no injuries