Capt-itch works for me. took awhile to break in, now the leather is soft and supple. 2000 SE Roadglide 1550 was HOT before I got mine. Can get some heat by rolling it up and sitting on the flaps, for those cold rides home. Great product and two can coozies as well.
Captain Itch's Crotch Coolers definitely work. I have them on my Road King and it greatly reduced the heat I felt on my inner thighs when stopped at lights or in traffic. It's a high quality piece of leather with a nice soft backing, is very easy to install and is a cheaper alternative to most other similar products.