Just a quick warning: on average you'll lose coins when pointing rental rigs or nicehash towards a solo mining pool (or any pool for that matter).
Only do this if
- you want to play "lotto mining" with your coins
- you have loads of knowledge, and are extremely lucky in finding cheap hashrate and finding blocks
Think about it:
- Somebody renting out his equipment will charge a premium for this (for example :if he would make 1
BTC a month by mining with his rig, why would he rent it out for 1
BTC or less? answer: he wouldn't... He would charge 1.1
BTC/month for it, while it will only make 1
BTC)
- mininrigrentals or nicehash need to make money to, so they'll charge a fee
- the solo mining pool will charge a fee.