Can we still run the full note to earn KMD if we are not elected as the notary node?
Yes it is possible to still mine Komodo without being a notary node,  however it is very inefficient.   The best way to acquire new KMD is claim the interest that accrues from the KMD you receive in the ICO
Recently a few GPU miners have started mining KMD.
approx 10% of the KMD block rewards are up for grabs, possibly a bit more. The design of the KMD mining allows for seamless transition between a pure PoW coin and a dPoW coin. The more PoW hashrate behind KMD, the more secure it is for blocks prior to them being notarized, so we welcome any and all miners.