How to weight a closed bow boat

I posted something up the other day, but I figure i should ask it this way instead.

I have a closed bow Moomba Boomerang, I used to put 200-300 lbs in the back/middle. From a post I herd that I should put more weight in the front and lengthen my rope to around 70'.

We went out today and I put 100 pounds up front and 200 in back. I really liked how the wake was and the new rope length, but the bow of the boat was really low in the water. The front weight is pretty much permanent, because it really hard to climb under the bow, so I cant take it out when just riding around. Should I have the weight as far in the front as I can get it or move it back some? Is there anything else I can do or should I just watch the front from now on. I'm worried about water coming over the bow. 100lbs doesn't seem like a lot compared to all the weight you guys put in your boats, but mine seems to react to very little weight. Max i have put in is 400 in sand bags and the boat seemed really bogged down and put out (to me) a huge wake.