I find that whenever I transition into mount guys will bring their hands close to their collar and hold them there. I've asked my instructor about solutions to the problem and he suggested moving into a higher mount and getting my knees under their shoulders, pressuring them to open their hands up and leaving their neck exposed. That works well with someone who isn't trying to oompa you off and shrimp their way out. I know that another way to avoid the situation is by getting control of your opponent's arms/hands before or as the transition is made, but I've yet to do that (I usually concentrate more on the actual transition into mount and forget about controlling an arm). Most times if a guy brings his arms in to his collar I just move out into side control because I seem to have better control and submissions from that area. But I want to submit from mount. It's supposed to be one of the most dominant positions in BJJ, but I don't feel dangerous at all when I'm in mount. How do you open your opponent's defences up when in mount and find them defending their necks and arms in the way that I've described?