Another thing to consider may be items being stowed on board. Anchor, ropes ,lifejackets coolers etc. Have you added stereo and or extra battery's. carrying more items on/in the boat due to accumulation over the years etc. Its all added weight. I carry more now than ever,but if circumstances are right i try to epty all non essential items ,etc,including people to achieve the best case scenario for skiing. surfing on the other hand ,total opposite.. Keep us posted.