Not too sure if any of you are interested, but I thought I'd just write a little about this anyways.
Here in my hometown of New Plymouth, New Zealand there is New Zealand's fastest hydroslide. The tower at our aquatic centre houses 2 slides, the "family slide" and the "turbo slide". The family slide is not thrilling however the turbo slide is a reasonably steep drop which can reach speeds of up to 50KM/H depending on your weight according to the designers. The slides were a prototype and had a number of flaws which delayed the opening, and still have some flaws today. One of these flaws is an uneven surface at the bottom of the main drop of the turbo slide which actually gives you a very small amount of airtime (literally), and after the drop you basically stop and have to push yourself for the rest of the ride. If any of you are in New Zealand some time, you should definitely check out this slide as it is quite a thrilling experience.
Recently the aquatic centre installed a new pump on the turbo slide and also installed some jets which give you a boost at the end of the ride.
ABOVE: The new slides installed in 2008, opened in mid 2009.
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Prior to these slides our local aquatic centre was home to 4 outdoor slides, which were closed in 2008 due to corrosion in the ride structure. Some of these parts were used on the new slides. There were 2 unenclosed slides which required a mat to be used, and there were 2 flume style bodyslides. It is really hard to find photos of these slides so a huge thanks to Todd Energy Aquatic Centre for sending me these.