It might have been good advice, or he might have just been taking the p.
There are so many variables its difficult to tell you what to do. Were you fishing a single fly, floating line, how long was your leader, were you fishing it static or retrieving it, fast or slow?
If you could see fish moving/feeding in the top of the water I would be tempted to try the 'washing line'. Try a 15' leader, with 2 droppers at about 5' from the line and 10'. Tie a booby on the point and a buzzer and a nymph on each of the droppers. Use a floating line, if you see a fish moving, cast out to it, if no fish moving cast to your left or right, retrieve the line slowly, then make your next cast a bit further round from the last one. Vary the retrieve rate, put on a sinking line, let it sink a bit and retrieve again, or leave it static and see what happens.
Hope this helps.
Good advice from Brownieseeker, a days introduction costs about £60 at rutland,
http://www.anglianwater.co.uk/leisur...hing/learning/