Here is a very quick pic showing what we came up with. This is shown here fully extended; however, when positioned on doubles, the profile is very minimal when folded down. A buddy machined the ball mount and since I was doing a shoot for some cool UWLD products, thought I would use their clamp in the photo instead of the ones I normally use.
no worries about the magnet coming off...and if it does...we have much bigger problems. (grin) I could probably pick up a set of 104's just by the magnet (that is a slight exaggeration but you get the point). This is a much more flexible option which will allow for ease of transfering the strobe from model to model or re-position in the cave or wreck. more info forthcoming on the water trials
To follow up on the mounting issue... A good buddy came up with a magnetic mount that will work great and keep it tucked in-between the tanks. Granted, it only works on steel tanks but that is not an issue with the group. This approach will not only keep a very low profile but also allow easy removal. I thought it was a clever approach that I hadn't considered...and thus thought I would share here.
Since there have been a number of views to this, here is some info. In full disclosure and to not violate any forum rules about such a post(?), I am affiliated with the shop I mention. Deep Blue Divers just acquired a building that has two 31'dia x 25'deep pools. Many of us that are local shooters see this as a great opportunity to hone the underwater photography skill set. If you are passing through the area, or would like to utilize the facility for a photo shoot, give the shop a call. You can also PM me here as well. While there is a lot of work going in to this, it probably won't be ready for the general public for a month or so. Just thought I'd let some of the folks here know before it hits the main-stream.