Installation:
YMAP Jet ski location:
Jet ski slide location here: Grand Theft Auto V \ update \ x64 \ dlcpacks \ custom_maps
Autoloadmaps
You need to drag it into the Grand Theft Auto folder v you go to the uis script folder where you drop the Autoloadmaps folder.
I use to do this mapping:
scriptthook v
map builder
Map editor
attention for the autoloadmaps I use an addon vehicle: 2011 Yamaha FX HO Waverunner
Make sure you have the above mods and that they are up to date.
Credits:
Aless59