The U-bolt, a universal-CBT-toy...

The U-bolt is a sailor-gadget, and what it is used for on a boat is something which you'll have to ask a sailor, to find out if you think it is of any interest..*S*

On this U-bolt I have modified a little (as I'm known to do).

Here you get a schematic view of the U-bolt I'm using, with the 'original' parts signified by a green color, and my modified parts signified by the yellow color.

The actual U-bolt, with a 6mm threading. (App. ¼").
A piece of 12mm aluminum pipe, (App. ½") which I've drilled two holes in, in order to make it fit over the U-bolt.
2 pieces of 12 mm aluminum-pipe, which I use as 'spacers', in order to get the bottom piece of pipe further down the V, than the threading allows for.
2 spare 6 mm hex nuts.
One of the 2 'plates' which come with the U-bolt.
The 2 6mm hex nuts, which came with the U-bolt.

Here you see one possible 'mounting'.
The possibilities are almost endless, the only thing limiting the options, is the limitations to your fantasy...

A mounting, which is a little more 'restrictive'. Here I've chosen to tie the cock in place, just behind the cock head, in stead of tying the cock 'further down'.
The big difference is, that this mounting will not allow the cock to slide out through the U-bolt, when erecting. The swelling will occur between the two points, where the cock pass the U-bolt.

Here you have 3 pictures showing the cock i 3 states of erection, with an 'upward bend'.
Notice that cock is swelling between the two places, where the U-bolt is holding on to it..*S*

the reason to make the two 'spacers' ( No. 3) is, that the threading on the U-bolt does not reach as far down towards the U, as I would have preferred it in order to give a good 'grip' around the cock'n'balls. The two spacers, force the 'bottom' piece of pipe further down towards the U, locking the U-bolt tightly into place.

The trick is, that the two spacers, as you see here, are placed on either side of the U-bolt, on top of the aluminum pipe, locking onto the ball sack, give a smaller opening, as would have been possible without them - as the two hex nuts ARE at the bottom of the threading..

It's also possible, to mount the U-bolt around the base of cock'n'balls at first, and then to mount the cock head later.
As you'll see, I've used a wider piece of aluminum pipe towards the body this time.
This has the (intended) effect, that it will be impossible i.e. to sit down, at leas unless you're kneeling, as the wider pipe will pull the cock'n'balls away from the body.
You could say it is an 'inverted Humbler'..!
-as you can see...

Another (expanded) option:

9/32"
Now I've grabbed an 8mm (9/32") U-bolt, in stead of the ¼" I have been using this far.
Furthermore I have expanded the threading down the 'legs' of the U-bolt, as you see from the picture above.
In this picture, I have only threaded the U-bolt down on one side, to let you see how far down the threading was from the beginning.

The 6mm U-bolt measure app. 85mm (3 5/16") from top to bottom, whereas the 8mm measure app. 115mm (4½"), and the extra 30mm (1¼") gives a little more 'playing-space'.

Or, in other words, it allows for one more time through, as you can see on the photos above.
Here I've chosen to 'turn the U-bolt over', meaning that I've started with the cock head in the rounded end, which (in this case) place the two threaded end between my legs.
What solution suits you best, is for you to find out.

And, finally, a few words of warning: You need to be very careful, when tightening the nuts, as the thin skin in this area has a nasty habit of getting trapped in between the different parts, when they are moving....
DO NOT get your skin trapped there, it'll give you some nasty 'bitemarks' which will really hurt, and stay there for quite a while