Installation:
put the contents of "Seashark Jetski" into modloader, changing the number of the ids for the ide section and enjoy :)

Issues:
Seashark has a bunch
especially when you have to use a trainer in order to enter the thing

ADDITIONAL INSTALLATION (FLA required)

gtasa_vehicleAudioSettings.cfg:
seshark		                                3	          22	 21	    2	      0.9	       1.0	        -1	      1.0	       -1	       0	      8	         3	         43	               0.0


Special thanks:
Rockstar Games (original Seashark lod)
Peoples and friends on Discord (feedback and tips)