Was very impressed with the Super Duper Puma I have...did an expedition into the Gramham River this spring. We found a 30 million year old Ithyosaurous skeleton. We went back three months later with two Palentologists from the Royal Tyrrell Museum from Alberta. They liked what they saw, but the skull was about to fall into the river. So it turned into a salvage operation. We excavated the skull from a 60m imbankment, lowered the 150 kg rock to the river and put it in the back of my boat and rafted some 16km out to the road with it. I was concerned about the extra weight as the river was low and I was sort of the gear pack barge. But the boat handled beautifully.