Convertible bowling alley

An improved bowling alley of the type comprising a bowling lane bed including an approach and a foul line at one end and a pin deck at the other end thereof and a pair of elongated gutters parallel to and abutting each side of said bowling lane bed, wherein the improvement comprises deflection means peripherally configured substantially complementary to the configuration of said gutters, said deflection means being removably disposed within said gutters for deflecting a bowling ball rolled down said alley to thereby prevent said ball from falling into said gutters, said deflection means being releasably held within said gutters solely by the substantially complementary configuration, whereby said bowling alley can serve as a conventional alley when said deflection means are removed from said gutters and can serve as a carom bowling alley when said deflection means are in place.