I run a 91 four winns 170 freedom with one sac so far. The difference in wake was enormous, so I am planning on putting another one in, but the problem is that the USCG recommended weight limit is somewhere around 800 lbs. If I have two sacs at 540lbs each, plus driver, passenger and random equipment, is there going to be any problems? It already steers slower and takes forever to get on plane, but I think that may be helped by the second sac further towards the bow. I just dont want to kill my boat. Any Thoughts?