Hi all, new to the forum, just picked up a new to us pwc 97 seadoo gsx with 42 hours on it, it did not come with any documentation ie owners manual etc.. what are the weight limits on this thing? was hoping to be able to pull a tube with it, but laws in our state say one rider/one observer/for towables. And also does this unit need to be flushed after use will be used in freshwater, any help for a newbie would be greatly appreciated.. btw it has the 78? motor in it if that matters. Two stroke oil injected. Only thing wrong with it that i know of is no fuel gauge.