Chess timers.
[Snip]
I know some here hate it immensely, but I also use Hit Location tables.
I have one player who takes longer than the others, so I've been considering a timer of some type myself; I find it hard to determine what a 'fair' time limit is, though. Sometimes a player at my table will take a probably a few minutes to run their turn because they have lots to do, or to look up (new players), but they have made their action decision and are executing it as fast as they can. The slower player takes the time making the decision, while we all wait, but might still take that same few minutes. I don't really want to force everyone's turn down to 30 seconds (or whatever), but if I set everyone's turn at 3 minutes then the remainder of the players would be 'encouraged' to take longer to complete their turn, thus making the whole combat round longer.
On the it location, you didn't specify, but do you use it for RP or do you add more mechanics to the game?
For example, I'd have no issue with a GM that said (after soak roll) "you get shot for 3 points in the right arm" so that I could RP favoring that arm, with my character not having any extra mechanical penalties to using it. I'd not be so Ok with that shot in the right arm further hampering my ability to fire my gun, beyond the basic wound penalty itself.
I would be much more in favor of the hit location chart that gave additional penalties if it was just a random way of determining a result for a damage-soak glitch or crit glitch, since those results are GM determined anyway.