The ornamental design for a golfteebase, as shown and described.
FIG. 1 is a top-front-left perspective view of a golf tee base showing my new design;
FIG. 2 is a bottom-rear-right perspective view thereof;
FIG. 3 is a front elevated view thereof;
FIG. 4 is a rear elevated view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right elevated view thereof;
FIG. 8 is a left elevated view thereof;
FIG. 9 is a top perspective view thereof, showing the golf tee base connected to a tee body; and,
FIG. 10 is a bottom perspective view thereof, showing the golf tee base connected to the tee body.
The broken-line showing of a tee body in FIGS. 9 and 10 are included for the purpose of showing environmental structure and form no part of the claimed design.