AndISPiecesBy ART GLATTKENews-Herald Sport* EditorFive shows under the same roof is the billing for the eighth annual Mid-America Boat Show which is scheduled to “dock” in Public Hall in Cleveland, Jan. 29 - Feb. 7. . .The first show, of course, is the five-acre marine display, with literally more than one million dollars worth of water sport equipmenton display. . . . Second is Cleveland's new convention center which was built as an addition to the existing hall. . . Three | other well known shows will be] added to the boating exhibition in the form of an entertainment troika. . . , Included in this“package” will be the Harmon-icats, the Osmond Brothers and the Three Sons.