The watching it on water thing - nobody even close here does it, so no opportunity.. Yeah, cool in a lake, but in the ocean would be WAY more effective..
Years ago I hadn't ben to an iMax (we don't have one here) and I kept hearing bow amazing they were.. I kept asking people, "what IS an iMax? What does it do that's so bad to the bone?" Well, as I'm sure you know, its just a crazy large screen. nothing else.. Now Jaws has been released in 4K, but in iMax I still could tell some shots weren't as crisp as normal.. my guess being enlarged to iMax format tends to do that to video/photos.. but still really cool..
In the 3dversion, the Tiger Shark image - looking down the Tiger Shark's throat - had the most affect on me.. it TOTALLY looked like you were looking down a Tiger Shark's throat.. the depth of some shots was amazing, like that one and the underwater Hooper in the cage scene.. The opening scene where Chrissy gets whacked was another: shot at eye-level above water and the water looked like it was crashing into your face..
Jaws, which was NOT shot for 3D, had WAY more effective 3D effect than most movies I've seen that were MADE for 3D..
Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..