I see alot of people changing choke at stations, i have been there myself, I dont tend to now usually IC, and my favourite LM will cover most targets where i shoot. However there is no doubt that having the correct choke for the clay infront of you is optimal, with confidence, lots of patterning, and even more shooting you know what your shot is doing down the range, i tend to change choke less and less nowdays. but thats me, we all follow our own paths. SK. IC, LM, IM all have there place on the range.
CW