Perhaps Lehigh should help develop a booster club for basketball. Football has the Southside Boosters which maintains a strong presence at all football games including bus trips to away games and tailgates at home games. They encourage their members to attend basketball and other events but there is nothing formal.
Wrestling has their own booster club with a very active cadre of loyal followers. They too plan events around all the wrestling meets and they are all well attended. To the best of my knowledge basketball has nothing along those lines.