that's pretty much the way we often did it with the Grummans from a beach landing. Its really very stable when you sit on the deck like that, with your legs bracing the hull on each side. 
But we'd put the stern out, and the bow on shore - that helps to lift the bow when you shove off like that.



with a $3,000 kevlar boat - nope.

    what was kind of stupid in the video is the guy walking into shallow water, and then setting the stern on the gravel beach - as long as he walked out that far, he should have set the boat parrallel to shore in water deep enough to float it and loaded it there. 

would I recommend it - probably for any boat except a kevlar hull - that wouldnt' hurt aluminum or royalex at all - at least not for the first 25 or 30 years.  works fine for a beach landing, and doing it that way, neither paddler needs to get thier feet wet.  but you don't want to load up in a river like that - should always load up parrallel to the bank with bow upstream for max control. 

there is an advantage to loading that way if you are at deep water, but with a lot of slimy, unstable rocks 2 or 3 feet under - it can be really difficult to load in the water under those conditions, and the method demonstrated might save someone from a nasty fall trying to make a wet-foot entry - trust me, I know all about falling on slippery rocks while wet-footing an exit or entry.  just depends on the circumstances, but if I felt it was safer, I'd do that with a kevlar hull and the hell with a few gouges that were easier to repair than a broken leg.