Hello,Yesterday I was shooting a waterfall with my travel tripod and found out the rubber feet of the tripod are crap for rocky/ icy surfaces. It's the Manfrotto befree carbon original (not the most current model) which has tubes not round but with one flat side. Anybody happens to know whether there are spikes one could attach instead of the rubber feet? DIY solution? Thanks for suggestionsfarbschlurfthats the picture :-)Waterfall by Stefan Berndt, auf Flickr