is a layer of material 18 which has friction surface 18a facing upwardly from the attaching member 12 material 18 may comprise a known type of foam suede or other material having a friction surface and may be affixed to the attaching member 12 via any known attaching means such as adhesive tape etc the friction surface 18a defines an indentation 18b and may also define a partial outline 18c approximately the size of a golf ball enclosing the indentation 18b which generally designates the center of a golf ball a patch or layer of non skid material 22 is fixedly attached to the bottom surface 10b of the base 10 as illustrated in fig3 the non skid material 22 may be of any known material and is fixedly attached to the surface 10b by any known means arc marker 20 is movably attached to the bottom surface 10b of the base 10 by band 21 or the like arc marker 20 raises the ends 10c and 12a of the golf practice aid when it is placed on a support surface by raising these ends a slightly concave curvature is imparted to the attaching member 12 and the layer of friction material 18 this concave curvature is in the form of an arc and may be used to determine the proper arc of the club head during a practice stroke or swing although arc marker 20 is shown as having a generally 34 v 34 shape quite obviously other shapes may be.