Why when clearing the lead posting arm on the side with the lead leg must you go for a double leg? and vice versa the sweep single?
I'm a little confused why you can't remove the posting arm and then take the lead leg for the sweep singe. Or is it a matter of the double leg being the best choice of the two if given the option?
i hope i explained myself clearly. here is the link to the video :)
[URL unfurl="true"]https://grapplersguide.com/second-portal/lms/lessons/against-arm-post.28304/
This is John Marsh's system. If you try it out and decide eventually that you are more comfortable with something else (or your coach teaches something different) then feel free to make your own rules.
I think John's idea is this: if you lead with your LEFT leg, you are mostly shooting doubles with your head on your right (their left), or sweep singles to your left (their right leg). So if you clear space to your right (ie, their left arm), that gives you space to shoot your double and get your head into the pocket without getting cross faced (a common defense against the double). If you can clear space on your left (ie, their right arm), you can shoot a sweep single to your left with less chance of them posting your shoulder or squaring up.
Some other people may use different systems, for example they may choose a double vs sweep single depending on what leg the opponent stands forward with.
Ahh ok, that makes much more sense to me. thanks for your clear and concise explanation.
Jeiteki is completely correct. Let me just add that John Marsh teaches it this way, not because it is absolute, but because it is the easiest way to teach the system to beginners. There are a lot of things that can change things up. For example, in the video both players lead with their left foot. If one, or both, come in with a right foot lead, the choice of takedown may change. My advice to learn the principles, then add variables and see which takedown makes sense to you.