2: Bus conservatively. Bussing's overrated.
(Bonus: Treat your scumbuddies like any other player, not as your scumbuddies. Don't ignore them, don't attack them, and don't defend them just because they're your scumbuddies; if you do any of those, have reasons.)
3: If you're attacked? Use AtE and self-meta.
4: If someone calls you out on the AtE/self-meta, laugh at them. (A "lol" should suffice.) You are now unlynchable.
5: If for some reason this fails and you are under pressure, prematurely claim VT. (At best it 'clears' you of being mafia, at worst it launches the town into a pointless MD theory debate about VT claims during which your scumbuddies can blend in and bus you.)
6: ...Unless you're actually close to a lynch, in which case you claim to be a PR.
You will never lose as scum again.