Little info about my place: Judo/BJJ on Gi days, and no-gi and Muay Thai on no-gi days. We use a Judo belt progression, but spend a LOT of time on BJJ. Probably 50/50. Anyways, in practice we are allowed to use the technique being taught, whether it be armbar, choke, etc... In open mat, white belts are not allowed to try any submission whatsoever. Yellow belts and above can. Let me preface this by saying that I completely understand the reason why, and abide by the rules, because as some people have stated, the most dangerous Judoka is a white belt. For me, as a white belt, it seems like it is fighting with one arm behind your back, if you can't use something you have practiced over and over and it is sitting right there. Also, I think it builds bad technique, because if a white belt rolls with a yellow belt or above, the higher ranked person will get used to not being submitted. Also, you cannot compete in any tournaments unless you are Yellow belt. It takes about 5-6 months to gain yellow belt. What are your thoughts?