Prostate cradle

Bicycle seat concerns. Two peer-reviewed papers regarding nerve entrapment
If you experience any numbness, take a hard look at these.

The U.S. view (2009 update from Dr. Goldstein):
http://tinyurl.com/nat6x9

The European view (2005 study):
http://tinyurl.com/nwahah (click on HTML if pdf doesn't load)

Hello, I'm a newbie.
I recently bought a prostate cradle, and for some reason, I'm not getting any orgasm at all (not even a milking effect).
I tried sitting on top of it as well as putting the towel. However, I don't get any results.

1) Does the rear part of it should be inserted into the anus ? or should it just press between anus and the front part ?

2) Is it the rear part of the cradle that stimulates the prostate, or is it the front part of the cradle ?
or the effects of both pressing ?

3) For people who get Big-O from using cradle, do you just sit on it for 30 min or so ? or does it require some other actions ?

Thank you
I appreciate the comments

I see the manufacturer is making a softer version now. Has anyone tried it?

link to the softer version?

I was considering buying this for meditation purposes, primarily for the Kundalini stimulation. I've taken tightly rolled up hand towels before and placed them underneath along the acupressure point and had some great results.

Is it too uncomfortable to sit in an upright position with for an extended period of time though? Or will it just take some getting used to?

Link to softer version: http://www.prostatecradle.com/prostateproducts.html