Advice on obtaining super O

I got the Aneros Helix Syn about a month ago and have used it four or five times while lying on my side, on my back, sitting up – basically every position I could think of, but I haven't had success.

I feel a pleasurable sensation and a feeling that I need to pee, but I usually end up moving the toy with my hand or with my sphincter muscles for about 45 min before I give up because either the pee feeling gets too overwhelming or I just don't feel like I'm getting anywhere.

Does anybody have some advice on how I could reach that super O?