I run a dyno 3 watt headlight on the fork crown, a 1 watt LED on the axle, and another 1 watt helmet light. I aim them in a way that they light up a reasonable area in front of me but don't shine with high intensity into oncoming cars. I have to say that they are pretty much useless to spot pedestrians more than 25 ft in front of me; not enough for avoidance given my closing speed.

The thing that works for me best is to just anticipate that there will be a few on my path every morning and watch for clues to their presence. You can see their moving shadows in the street lamps or car headlights at considerable distance allowing you time to prepare for them. Occasionally you can get a tapetum flash from their pets, but that's often a possum, fox, or raccoon.