Implement Vs. AC = No No, correct?

[Tony Vargas]

Oh, I know they're legal. I was just asking if they're a bad idea.

No, as long as they are balanced with a slightly lower-than-average chance to hit, they are just fine.

 

[Danceofmasks]

Or just flat out hand out a bonus.
Like an implement attack that's Wis+2 vs AC.