What would your advice be for somebody to start a rig for alts coins etc? Or buy a share in a BTC mining operation?
I think that depends on many factors such as capital, where you live, prices ... You should to look carefully. If the electricity price is low, you have a moderate amount of capital, you can consider buying a rig and self-digging alts coins, but it takes you much time to manage. If you have a large amount of capital you can invest to buy shares in a BTC mining operation, you will not take much time to manage, but if your capital is small, you maybe don't have profitable with this plan.