Fly fishing is a particularly fun pasttime
Yes - and what's funny is that it's an angling method that uses an artificial "fly" to catch fish!
Do you like going out on a boat?
I like being on a boat but typically fly fishing uses casting a nearly weightless lure with different techniques than other casting. 
What kind of techniques are used?
The fly is cast using a fly rod, reel and specialized weighted line
What other types of lures are common?
Various "fly" lures and the fly line, which is usually coated with plastic, is heavy enough to send the fly to the target
What kind of fish are best to catch that way?
Well, techiniques for fly fishing differ among habitats, like lakes, ponds, small streams, rivers, bays, oceans, so there are different fish in different habitats