All you need to do is specify
a=sha-256 c=[Explorer COIN besides BitCoin] m=solo
Make sure you use the precise Explorer parameter for the coin - it is usually not the abbreviation...
You need to set up a wallet address for your earnings as these will not be converted into your payout coins specified.
And of course, you may need to register to trade for other coins / fiat. Prohashing mentioned they are adding HitBTC so that might be your best 1st option if you aren't already an active trader/want to be paid in cons not support by Coinbase.