I've been messing around with some similar problems. Lately, it seems that the handle is getting pulled from my hand when landing. I've come to the conclusion that it's not being pulled out, I'm just to far forward on landing and it would pull me over for a faceplant and I've been letting go and coasting to a stop. My board tip still seems to be popping up and I'm consciously working on putting more weight on the front when coming in. I'm still working on keeping the handle tucked closer in to my body, but it's not comfortable for me at this point and I seem to carry in less speed than with arms extended. When I first got the boat, I filled them to 50% and it scarred the hell outta me when I exploded off it and was bobbing around dazed for a few minutes. I can't even wrap my head around filling them all the way.

Lately, I've been running my GIII bags around 25% full and it still seems to 'rampy' for me at this time. It's becoming counter productive because now I'm becoming afraid of pending falls when landing in the flats. I think I might try your advice and just load up the bow and keep the back empty and see what happens this weekend.