Whenever you add that much extra weight you will def need to speed up. Those def look like 600plus sacs possibly even 800. You will want a 60/40 weight ratio rear/front. What speed were you originally riding? What rope length were you riding at?
When you speed up the wake narrows thus allowing you to ride a longer rope. A pretty common them among wakeboats is the more weight you add to the bow the rampier the wake will be. If you want to run a bit steeper wake you want bit more weight in the rear. The problem with running a more rear heavy boat is that the wake really turns into a speed sensitive issue with the wash n curl You have to be precise. If you run a bit more bow weight it gives you a bit more of a rampier wake that isn't so speed sensitive.
Does your Moomba have the automatic wake plate(adjustment on the steering wheel) or is it fixed/manual where you have to adjust it by hand?
I woud try this with that Moomba Put the 750's in the rear engine compartments. Then put both 500's in the bow. Don't fill the 750's all the way maybe about 3/4 and see how the wake is. My guess is it would be great starting point. add a little more each set to each 750 and see what it does.
I can't recall does that model have a huge locker under the bow seating? if so I would maybe try dumping that 750 in there, keeping the 500 on each side engine and putting the second 750 right above that one in the walkway.
Also if you measure the sac length and diameter we can tell you the exact size
Last edited by xstarrider; 07-18-2013 at 4:35 PM.