What to do on Fraser Island

Hi, we are going to Fraser early November with two other families. We have been there numerous times before and usually camp but this time we are staying in one of the beach houses near Eurong. We usually go to the lakes etc but I was wondering what other places there are to go and explore that aren't too difficult as one of the drivers has never driven on sand before. When I was younger, my family and I used to go to one of the old jetty's on the other side of the island, if I remember correctly it was always a nice drive and there were picnic tables there. Also, one of the other guys is looking at taking a little tinnie there and launching it off the beach. Where would be the best place to do this and would anyone recommend doing it if you weren't sure of the conditions sharks etc. Is it safe to go out in a little tinnie? I've heard it is calmer on Hervey Bay side if we were to do this.