Tell your friend his best bet is to join a decent country club, only play with friends and play in country club tournaments only.
Most, if not all, lower tiers of WGT tournaments are being won by sandbaggers and multi-accounters. Sandbaggers intentionally avoid posting any score that might tier them up until they have access to top equipment and are ready to "go for it". Multi-accounters are high quality players who then start a new profile so they can take advantage of legitimate players at lower tiers (like your friend) either by winning tournaments or in head to head play.
WGT has a financial incentive to allow the these players to do this despite T&C and the occasional action against them to the contrary. Actually stopping those practices is somewhat difficult and those players burn through a lot of $$ worth of credits in balls and equipment achieving their goals.