Any tinny around 4.5-4.8 is perfect for up cape York really. Biggest consideration is what trailer you use to tow it. As this is what destroys your boat more than anything.
Ive fished alot up the cape in a 4.5m boat. Was a basic seajay with a 50hp.At this size 3 blokes can man handle it just.. its plenty big to hit the reef aswell as creek fish
That's probably the biggest boat you can man handle for launching and retrieving off river banks/beaches etc.get stuck on a sandbar you can push it off ok.
If you used a 4.8m plate then your a bit limited with creek launching and man handling it as its a bit heavy. Just something to consider.
I have a mate with a 4.3m webster fisher. I think i'll be getting one of these for cape trips.
A lot more fishing room for their size.
goes through the chop quicker so you can get out to the close in reefs easier.
very shallow draft to being twin hull.