. >> tyler and his kayaking partner russ sturgis go out to check conditions at the lip of the waterfalldude, the level seems absolutely perfect. i love the look of the righthand side slip. i think the landing is safe. there's nothing that says no, except for the fact that it's a little high. >> nothing that says no? tyler has a different take on waterfalls than your average sightseer. >> dude, let's do this thing, man. i think this needs to happen. >> tyler and russ call in their support team. it looks like tomorrow will be the big day. >> in doing something like palouse falls, you can't practice for it in any other way than mentally preparing, running it over and over in my head. >> maybe so. but there's a big difference between visualizing going over a waterfall and actually doing it. the next day the safety team takes their places. two kayakers wading in the pool, a rescuer ready to rappel down behind the waterfall, and another one on the shore with a lifeline. also video cameras to record what will happen. >> i was prepared to walk away from it. and say, look, this isn't something t