Hi, I am a newbie to this site and I was wondering if anyone who has had any experience with the Bathmate can please help me out concerning usage of the device in the shower. Regardless of the number of times I watch the online video at the bathmate site, I still cannot fully understand how I can get a full and complete vacuum. I also do not know how you measure the amount of pressure you are using at each point. Does anyone please know of any video guide that give a blow by blow guide of measuring with the vacuum pressure in the bathmate? Are u even supposed to fill up the bathmate completely with water? Please any help will be appreciated. Thanks a Bunch!!!!