If you are connected properly -- you should start finding shares within seconds.
Don't wait.
Check your settings.
Not necessarily. I have pointed my GekkoScience Compac stick miner at a number of different pools, kano.is included, and it can take variable amounts of time, from 10 minutes to multiple hours, before it starts having shares accepted. Once shares are being accepted it seems to stay that way until something causes the miner code (cgminer 4.9.2 w/ GekkoScience Compac support) to be redirected.
The GekkoScience Compac stick is lottery mining on solo.ckpook.org now.
I have a sidehack modded S7-LN (2TH @ ~450 watts) that is powered off and gathering dust now. I was never able to get it to reliably connect to any pool, and I couldn't figure out why it was so. I upgraded my network connection to a higher speed and still no joy. If you are at all interested in the details you can read about it here:
https://bitcointalksearch.org/topic/help-with-miner-comms-to-a-stratumtcp-pool-1562227
Cheers,
- zed