- Post anonymously, signing it as yourself.
- Then log in as yourself, and reply to the anonymous post saying "Yes, I did that."
This way, there is verification that you are actually taking responsibility for your post.
That said, I don't suggest it. PM XP and PM levels are definitely a poor indicator of perl experience 1. They are more often indicators of one's contributions and involvement in the community. I definitely advise just posting and taking your lumps (anvils or sugar) as they come, and track your coding ability against real live code instead.
1 Take me for an example. Not a good coder, but (before i went dormant for a while) a contributor to the community, asker of decent questions (even if I am stubborn).