I LOVE A BOARDMAN FEEDER...........................200 feet from the hives.
Exactly!!
I have used them in new colonies, but take pains with a reduced entrance to the far side away from the feeder. If it gets cool at night, then warm during the day, the sun warms up the feeder and it leaks, or allows the syrup to dribble out faster than the bees can take it.. If the feeding is heavy, you can pull a jar from the boardman to find the feeder itself packed with drowned bees. At best, the syrup ran out the front of the feeder and is now making your bottom board sticky. if your hive is tilted slightly forward you have syrup leaking from the hive drawing bees from everywhere.
They can be a REAL nuisance...
Having said that.. IF, you use a bit of care, shield them from the sun to prevent the leakdown affect and take precautions against robbing they can be effective and useful. As I said, i still occasionally use them when starting a new colony, but generally use the feeder stand pictured. I put the feed out, the bees are quite capable of retrieving it.