This is something I've been doing for a while now and it's greatly improved my mixes.
NOTE: This is for mix control as not the "Ducking effect" (I recommend something like LFO tool for that)
A lot of people tend to use their kicks to trigger their side-chains, which works great in some cases but the tail of the kick often leads to it going over the top and loosing a lot of the sound.
I've attached a really tight "Tap" which I use as the trigger for my side-chain, it has no tail at all and makes all the difference.
LINK:
https://www.dropbox.com/s/5limc6187qbrh06/TIGHT%20SIDECHAIN%20128BPM.aiff?dl=1Here are my compressor settings.

I use this a lot of my sounds;
Lead Bus
Bass Bus
Pads
Anything thats prominent in the track and going over a beat.
Give it a try and see how your mix turns out, your kick should really start to punch through nicely.
Here's one of my tracks that I've applied this technique.
Hope it helps ;D