Thanks all…I’ve been thinking about this all day and am pretty sure this was my own-doing. I’ve always used full throttle to get on-plane and never had a problem. I think that after so many years off the water I was just expecting SOMETHING to go wrong. So I was easing it up to speed, not thinking about getting up on-plane. When the bow went up I looked back and was surprised at how the transom was. I was convinced I had taken on water and had just shifted the ballast back with the throttle increase. With that thought I was not about to give it more throttle.
I think I just need to take it out again. Float it for a while, open some accesses and confirm there’s no water in the bilge (no reason there would be, but just so I can get that thought outta my head) and then bury the throttle and get it up on-plane. If I do a wheelie and put the boat on its back, I’ll know there was a problem! But in reality, I’ll probably just prove that it was my inappropriately conservative use of the throttle today.