English is clearly his third language.
Back to training, I don't like box squats because I think they are too dangerous. So I would always opt for squatting to pins.
What do you see as the advantages to box squatting vs squatting to pins? Possibily easier to disengage the hips, but if you do it right (wide stance, external rotation, knees not travelling too far over knees) you'll get the glute activation you're looking for.
For our purposes, the box squat is ideal. We can ensure depth, going with a wide stance hits the entire posterior chain as long as the lifter keeps his/her feet forward and sitting you really never disengage hips, with a load, especially a heavy load, it's really impossible. When we teach it, we always cue to the mid-section tight as well as inhaling through the nose on the eccentric and exhaling on the concentric. Wide stance, you never see an athlete stand with a narrow stance, it's an athletic stance, knees bent, feet wide.
With wide receivers, RB's, Tight ends or general skills positions, we use pins once in a while but not as a general rule or staple in our main lifts.
Back the sitting part of the lift. Even with our general clientele, we do a ton of posterior chain work to prevent any low back or knee injuries on the main lifts. On an average, we hit posterior chain at least three days per week. Remember what the conjugate system consists of....the supplemental lifts reinforce the main lifts. In the first video that I posted of Louie teaching the box squat, he said he brought a tight end down from a 5.1 40 to a 4.7 without even running him. I can attest to that with my own athletes, the difference is, I run my athletes. Now, I could careless about an athletes 40 time, I'm more interested in their 10 yard splits and first steps.