I popped over to Russell Watersports last weekend, partly with a view to keeping my boat there occasionally, and partly because I'm nosey bugger.
In all honesty, I was quite impressed with the site, and I would happily keep my boat there. The site is an 'island' in the middle of a lake with a single access road, controlled by 2 gates. There is 24 hour CCTV coverage of the site, and access to the site is only available when the staff are on site.
It is in a very secluded spot, completely invisible from any nearby roads, there is no possibility of opportunists 'chancing' upon the place.
The theft of the jetskis was done with pair of 7.5 tonne lorries and hiabs and was a well planned exercise. Perhaps if the site was more publicly visible they would not have had the opportunity to spend 3 hours loading up without being caught, but on the flip side a visbile site encourages vandals and opportunists. It's worth noting that the CCTV system did have a tape in it and the theft was all recorded.
I'm not gonna pretend to be a security specialist, but I think the site offers good value for money, and is as secure as any (more so than a lot) of the sites I've looked at, despite this break in.
P.S. They're not paying me to write this