During the first use I have broke the original rideplate just by laying it on the ground. Rideplate and rest of files from AlexMu's jetboat: https://www.printables.com/model/496157-jetboat-hull-new-design
So I decided to create my own, flat bottom one so you can lay the boat flat on the shore or wherever you want to without risk of breaking the bottom part of rideplate.
Bolts straight to original heatpress inserts but uses the separate die and ride plate as you probably already noticed. Added another groove for oring or silicone sealant on the die side. I have created also a modified die for it: https://www.printables.com/model/1421483-rc-jetboat-jet-drive-die
Printed mine in PETG with no supports. No major issues expected during printing as it sits mostly flat on bed surface.
Be sure to add a tiny amount of glue of your choice for installation outside of bolt pattern.
The author marked this model as their own original creation.