Cotton Patch Gospel   Less is more. We did it with four platforms, period.   Andy Mollema, Benzie County Players, Frankfort, Mich.   The show calls for a table, a boat and a pulpit (if possible). We designed a set piece that is all three of these in one. Upright it looks like a basic table (strong enough for Jesus and/or Matthew to stand on). On its side it becomes a boat with a bench/seat inside for Rock and Andy to go fishing in and can conceal Rock's attempt to walk on water. Up on one end it becomes a pulpit for the TV evangelist to pound on effortlessly. If you would like the plans I could make them available. Pastor Bob Wang (262) 859-2540.   Stacey Clifford, Somers Community Church, Somers, Wis.   The only difficulty we had was adapting the music for female voices. (We had four guys and five girls.) You need to be very careful in the way you go about this.   Kathryn Janicek, Erie High School, Erie, Ill.   Read the real Gospel, too.   John Flokstra, Prairie Bible College, Three Hills, Alberta, Canada   If you cannot have a full band, at least try to have a bass player, in addition to the keyboard player. We used keyboard, guitar and bass, and the bass really brought it all together.   Rev. Stan Purdum, Centenary United Methodist Church, North Canton, Ohio