I don't know if true someone on the seadoo site long time ago said you would lose a couple of HP to mod to do the same
I guess you would lose some HP but how much how knows maybe you can tell us if you do it
when you are in the surf you can be less than 10m away from each other and not see nothing but the spout you can .
Best not to being that situation when we go surf riding we aim for 100m apart and keep a look out for each other and number 1. rule first person to see another rider gives way. This has worked well for many years.
Always liked watersports; windsurfed and sailed catamarans. Twenty plus yrs ago I took a few spins on a friend's stand-up Kawasaki jet-ski. Knew then that some day I'd own one. But they changed into 3-4 seat mega$ rides I had no use for.
The first time I saw the new Spark - I knew I'd buy one!
When you mentioned water spout I was thinking of when you nose the front end of the ski into the water and full throttle for the bottom. The jet pump will rocket a huge spout of water up into the air . Not really possible on most of huge seacow ski's of today but the smaller less bouyant ones from days of old could do them easliy. If I get my polaris back out on the water next summer Ill get a video.