A carpet putting surface having a longitudinal length longer than its lateral width and comprising a predetermined putting location marking, and a plurality of substantially "V" shaped markings placed apart from the predetermined putting location marking, with each substantially "V" shaped marking having the open end of the "V" closer to the predetermined putting location marking than the closed end of the "V." An apparatus for practicing golf ball putting comprising a carriage having a spool of carpet putting surface and a golf ball retriever is also disclosed and adapted for use on a bowling alley lane.