Forum:Bioshock infinite shock jockey/undertow mechanics

I know Shock Jockey+Undertow is a rather  deadly combo - lay down SJ traps, pull enemies into it with Undertow, have fun. However, since I'm using the "charged-up" version of both vigors, this process can drain my salts quite fast.

So,one question is - is it possible to obtain the same damage output as the above mentioned combo by simply shocking an enemy and then use undertow while he's stunned? Or will it do less damage? Since this is the cheapest way to use the combo, as I'm casting both vigors normally. Also, This combo works on patriots, right?

Another thing - is it possible to obtain a similar damage output to the above SJ+UT combo by using Undertow to pull an enemy, then meleeing him with Electric touch hat on? If it takes effect and electrifies the enemy, it essentially works as a cost free Shock Jockey.

One last little question - can undertow, even with any gear or upgrades or something, electrify enemies by itself? 'Cause Ive seen some videos where people pull handymen/patriots toward them, and they stay electrified/stunned even after undertow wears off, and sometimes it happens to human enemies as well, so Im rather confused.