Book-Waist Deep in Montana Lakes by John Holt. This is a companion volume to Holt's Knee Deep in Montana's Trout Streams. He explains, ``There are thousands of lakes in the state and I wanted to check out several that are shrouded in strange rumor.'' Montana's rivers and streams are famous for their great fishing, but the lakes provide every bit as much fine sport and as many graceful vistas, as Holt amply testifies herein. His tone throughout the book is pleasantly conversational and self-deprecating, like a good fishing buddy talking over a few cold ones about the day's events. Whether casting for whitefish on the enormous Flathead Lake or in quest of the colorful grayling in Glacier National Park, he has an ample supply of mordant humor. Unlike the best writers in this genre, however, Holt seldom moves beyond the specifics of the craft; the result is that this volume , for all its many charms, won't interest non-anglers very much. The book finishes with a useful section filled with practical advice, phone numbers and addresses for those planning on fishing the locations described in the book. 150 page Paperback edition. 6 x 9 inch format.