I'm 6' 2" w/a 3/4 bass; much of my end pin is exposed.

I recently replaced the solid-steel wobbly wonder w/a hollow(I believe it's aluminum, although my repair guy said it's stainless steel)one that's a good 1/2"-5/8" OD. Very stiff, even at near-max height, & very secure. Worlds better than the old POS.