im a short guy 5"1 and weigh 60kg and everyone i have ever fought in comps was taller, things like triangle dont come easy at all and i tend to not try them and my guard is broken fairly easy with short dumpy legs so i have been practising open and half gaurd(thanks to the help from andre pimento)i also have scoliosis which is a curved spin and my flexibility in my spin is very limited but does not stop me doing bjj and have competed in judo and bjj many times. i tend to play my game around speed and strenght more then technique as some moves are to bendy and stick to the basics and fight for top position. but on the over hand bjj and judo help to keep my spin moving and healthy plus supple in the areas that are bendy my osteopath tells me to keep active and stretch everyday. thanks oossssssssssss