during the Race Across America... I was in the aeroposition a lot. I tried the liberator saddles with cut-outs witht the results of saddles sores on the sides of the crotch. I thereafter switched to saddleco saddle... the saddle that is made out of a mesh.. I rode on that one for the remainder of my race... and I could pee during the whole race. Previously I have had problems in ultraces in becoming so sore... that it hurts like hell to pee.
I used the Fizik saddle aliente on my climbing bike and love that one. That one does not have a cut-out... but since on the climbing bike I would be more upright, put more pressure on legs and aleviate pressure on butt... it worked well.
I used A&D ointment liberally on my front part of my crotch.... and I mean put a large amount in there....
Then the shorts... invest in a pair of shorts with good padding... I use pearl izumi and sugoi.. top of the line... it is worth it.
Cheers,
Cat.