If you worry about the little hat-shaped landing gear clips, you can use nose-gear mounts to mount the axles on top of the floats. Lots stronger, somewhat heavier. It's pretty clean 'cause you only need one wheel collar then.

But there's a funny phenomenon to airplanes and chains: If you strengthen the weakest link, then another link becomes the weakest link. And with Murphy's law, when the NEW weak link breaks it does more damage than the old weak link would have done when it broke.