Hydrasport ls 185 with Johnson Fastrike 175 will not plane out

[Hydrasport la185]

Hi I have a 1997 ls 185 hydrasport with a 1997 Johnson fastrike it starts an unnatural fine with just me in it but when I put a full tank of gas in it and a partner and fill the livewells it just doesn’t want to plane out any more it used to was fine but it just has started this crap any help would be much appreciated

[Gatchmo5710]

Have you done a tune up lately? Verified the engine is operating properly? Link and Sync? Does the engine loose bite or not build any rpms? My DV200 struggles when loaded, but ive noticed the further fwd the center of gravity the easier to plane. So when im loaded down i make the dog sit up front.

Maybe the old 175 id closer to a 115 now a days????