You talkin' to me?
Several pitfalls await the sinner who addresses the reader in such a wise. One is the grammar thing. The understood imperative can't change persons just because you close your eyes and wish really hard, as in this example:
The understood subject in both cases is "you": If you're wearing Crocs, you should watch kids' toes. Bad idea for a couple of reasons. One, in many states, the cops take a dim view of underage toe-watching. Two, your Crocs aren't the point of the story. What the hed wants to say is that if your progeny are wearing Crocs, you need to look out for their toes. Send hed back for rewrite. You can torture grammar all you want to, but you can't make it confess to this sort of thing.
The other pitfall arises from deliberately offending your readers by assuming certain kinds of group membership:
So you think that fancy navigational system in your SUV is smart?
Consider the mighty osprey.
Nope. Don't have SUV. Don't have fancy navigational system. Not prone to thinking wires and lights are particularly smart on their own. (Do have visions of osprey rolling out toward unsuspecting writer's liver and lights, if that helps.)
Please. Third person only. If you're talkin' to me, stop.