Also if the miner ran into problems that could be an issue since nobody will be around that would know how to fix it. I'd probably need to be able to log into it remotely and restart it if that is an option. What are the odds of something going wrong, I'm not completely sure. I mined before and ran into some problems with the miners needing to be restarted, but that could have been my own problem.
But another aspect is the heat output, wiring, and the nature of that. Wouldn't want to come back to a burned house if you machine doesn't have any other problems.
If he were to do home hosting
Another idea might be nicehash and mine to ck pool? Just put in a 5 to 10 th order every week or so. I think you can have open offers for 14 days there.