Cychologist

Drops are fine. Aero bars (although I don't personally use them) are fine also when you are in front, there is still plenty of draft, even with the small riders. The point is whether on the hoods, drops or aero bars, maintain the effort of the pace line, don't speed up.

In a related issue, if you decide to draft off someone, not in a pace line, be sure they know you are drafting. If fact, ask permission and don't be a wheel sucker but take your turn pulling. The first point is for your own safety; the last points are common courtesy.