If all else fails send him with the standby's. Prince nymphs, pheasant tails, midges, parachute adams, adult caddis, and a few attractors like royal wulfs and yellow humpys. Once he arrives he should be able to find more info if not at a shop then try the regulars at the local watering hole. (and if that fails you have a ready made plan B)
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"I fish because I love to... not because I regard fishing as being so terribly important but because I suspect that so many of the other concerns of men are equally unimportant - and not nearly so much fun." Robert Traver, Anatomy of a Fisherman