if you play on a table or some kind of flat surface, these polyurethane feet will make your stick as solid as a rock. they are 100x better than the TE rubber feet, and probably 1000x better than the HRAP feet. it will feel like your stick is bolted down.
these cost about 2 dollars for a pack of 12 at walmart.
http://www.itapestore.com/ProductImages/bumpon/pad/Bumpon_SJ5303_pad_itapestore.jpg
i play on top of my TE box (that is super glued to a table, lol) which has a nice shiny coating so it sticks particularly well.
http://www.gamingnow.net/diy/other-diy/stick-on-bumpers
http://www.amazon.com/Waxman-4215395N-2-Inch-Heavy-Bumper/dp/B001WAK6DS
http://www.amazon.com/3M-Bumpon-Blister-SJ5312-Clear/dp/B000NG60SW/ref=pd_cp_hi_1