Guard. If you look around a BJJ floor at any given time during rolls, you’re likely to see about 50% of the pairs of players in some sort of guard.
Given the frequent occurrence of the position, it makes sense to focus on it. Heck, it wouldn’t be wrong to spend about 50% of your time on guard. There’s certainly plenty of stuff to cover: closed guard, open guard, half guard, passing the guard, sweeps, submissions, z-guard, k-guard, and all the guard variants I’ve never heard of or have forgotten.
If the theme works anything like our last few, everyone will come out at the end of the month a much more formidable player. My plan is to stick to closed guard and the fundamentals of the position. Hopefully the other coaches have some fancier stuff to keep everyone entertained.