Sorry no photos.
This is the sub and it was quite a while ago that I had it set up as a static diver.http://www.youtube.com/watch?v=Sva4FPOnU80
I switched back to dynamic diver primarily because I couldn't see the sub once it went under.
The system was real simple. On one channel it would simply open the fuel injector and gas would fill a bladder which was actually a rubber air spring from JC Whitney. It had a hole in the bottom and the incoming gas would displace the water and it would attain buoyancy. To displace the gas a bilge pump would force water into the bladder displacing the gas or air and the sub would sink.
One-time I had the sub in about 30 foot of water and I would just let it sink to the bottom, sit there for a while, and then bring it up. This worked great and I could always tell where it was coming up by the leading bubbles.
The only problem with this setup was that once underwater I couldn't see what the sub was doing. If I could see it then of course I could make adjustments.
As a dynamic diver I always know that it is buoyant and I could judge how deep it is by the amount of time I use the down control and also the angle at which it submerges. So for my particular situation I abandoned the static system.