Evading Detection!

Greetings All!

I have 2 questions.

1) If you were hacking from home how would be hack anonymous while using payloads from Metasploit or SET as their require your external IP to connect back to you?

2) If you were hacking from mall, say you cracked their wifi, how would you port forward the connections back to your pc as the router admin password may be different thus you can not change the settings..

I hope my questions don't sound to black hat lol, just been curious about this. Oh aslo know how to use proxychains for things like Nmap but not for Metasploit.