I've built a separate version of the Harpoon cannon from PHP-13. Instead of it being the sole possession of the Gyro Raiders, this would allow others to use it; regular sea-going pirates, whalers, used car repo men, etc. It would come equipped with a motorized winch. There would likely be two or three in the pack.
I'm not sure if demand would justify releasing this model, so any opinions would be welcome. Please forgive the quality of the scan, it was done quickly on my flat-bed scanner/printer.