i'm not a hardcore polariser user; in fact, i rarely use one. My limited experience with polarisers goes like this: the polariser (which is rather expensive) is kept properly in it's plastic case in the camera bag (bcoz i dont wanna scratch it).
In order to get the jogger and fish shot - that's assuming my camera is already up and ready to shoot with the right lens mounted (and i shoot primes) - i need to reach inside the bag, take out the polariser in its case, unscrew the UV filter, screw in the polariser, put the UV filter back into the PL's casing, keep the casing, pick up my camera again, position myself for the right angle to use the polariser, slowly turn the polariser to the desired effect - and then shoot. i'd likely have to wait for the next jogger and fish to appear (at the same time) without moving from my position.
It's also not a good idea to keep the polariser on the camera all the time bcoz it makes the viewfinder really dark (about 1-3 stops i think), and for general photography you can't judge sharpness with your eye when it's that dark.
So i'd have to reverse the whole process of putting the UV back on, unless i'm really hot about the man n fish picture. So you see, using a polariser can be a real pain, and thus not recommended for weddings and sports, unless you have a lot of time to set up a shot.
Maybe they should build a PL that clips on - like the way lens cap does. That would be a lot easier to use.