Chastity Forums

Sounds like a piercing is probably your only choice, really - PA piercings seem extreme, but are fairly painless.

Starscuck,
You can try Jailhouse spiral steel chastity cage OR bird cage
It is available on http://www.ebay.co.uk/male chastity cage
It comes with 40 / 45 / 50 mm base rings
I think if you go for 40 mm ring, your problem may be solved as the gap between the base ring & cage is minimum

For what it's worth, I was having the same problem. I would get fully erect during the night, and my scrotum would be long enough to allow the base ring to follow the erection up the shaft. It would finally snug up against my balls, but not until it allowed me to be fully hard. What I discovered, with help from this forum... see "Proper Fit" in the General Chat area, was that my base ring was one size too big. It felt very comfortable, but at night it wouldn't provide enough of an "anchor", and would move like I described above. By going to the next size down ring, the ring doesn't move even though it doesn't feel too tight and is also very comfortable, so it grips more and prevents me from becoming fully hard. I can feel the erection going essentially the other direction, back toward my body, and my scrotum/balls are still free enough to move even when hard. For me it's a much better set up, sor what it's worth... I would try a smaller ring first, even though it might take some time to get use to it.