There seems to be 2 makers of jetski pods now. But neither seem interested in the NZ market.

This is one brand. PodsSKI | Jetski Fishing & Leisure - Universal Jetski fishing pods

IMO is a game changer adding a lot of stability but more importantly long range capability to a ski. Simple to install.

But we need them in New Zealand at a reasonable price, given they are just plastic and all.