That's how I do it. I start my old S1 a few times a week for a few hours and have it pointed to a solo polo. Just testing my luck and enjoy the humming of my S1. I am long out of the mining game but I like this cheap form of gambling.

I learned the hard way that buying BTC is much cheaper for me than buying miner, psu, raspi's and pay for electricity (and time invested doing setup or maintenance).