What are your thoughts on pin squats in regards to
a. do them or don't do them
b. how high should I run the pins?
c. how heavy? Can I run a pin squat very high at over 100% the way I would a block pull deadlift at 110%?
I have access to great squat racks right now but no boxes so I'm trying to get creative with accessories.
They can be a good assistance lift to the squat for a variety of reasons.
They can assist one with rate of force development if started near the bottom (hip crease below parallel up to no more than 1-2 inches above parallel) as there is no eccentric phase. If doing them this way, I would opt to use the SSB unless super mobile. I would also do them the way Josh Bryant advices (I was a client of his in the past), which is to do a wave like.
Just an example of many possible options with this method:
60% of 1rm for 10 singles with 30s rest (avoid building a stretch shortening cycle)
65% of 1rm for 8 singles with 30s rest
70% of 1rm for 6 singles with 45s rest
75% of 1rm for 6 singles with 45s rest
80% of 1rm for 4 singles with 60s rest
85% of 1rm for 2 singles with rest as needed
85% or 1rm then 90% 1rm with rest as needed
Work up to max
They can assist with maintaining bracing and position out of the bottom (if you tend to chest fall when squatting). To do this, set the pins to where your hip crease is around the bottom of your free squat position. Unrack the squat and walk out like a normal free squat, squat down until the bar hits the pins, weight but do not release tension, then squat up. This method can be done for sets that include reps as removing the stretch shortening cycle is not the goal here. This is favorite for Mike T of RTS. I would do this as a secondary lift for sets of 3-6 reps personally, not much more than RPE 8-9, but lower RPEs could be used too.
The last major reason I would use pin squats is to overload. I would set them to where you are about half way up in your squat, then start from the bottom or your can walk it out and squat it down, this is more of a preference thing/needs thing. Starting on pins will make it harder, thus less weight being used and better recovery. Walking out and loading down is more specific and you get the benefit of unracking and walking out very heavy loads, but this will be more taxing. At least one study supports this method. I would assume its due to getting the nervous system turned up for heavy squats structurally and helping make heavy squats feel lighter so they are less intimidatingly mentally as your unrack and walk out a PR attempt. The mental side of a PR squat is very important. I would not go much beyond 120% of current 1RM for this method as any more likely just eats more recovery up but without translating as well to your actual free squat numbers.