As and ex Queenslander who married a Tasmanian and have now lived most of my life in SA have noted the different ramps construction in each state. Qld/Tas have mostly freebie ramps. SA has mostly $8/day charge for multiple ramps with Pontoons.
Up to the last fishing trip I thought hanging 2 bouys over the side of the boat to protect the side from the pontoon was akin to a bloke going shopping (with the wife) with a handbag to hold his wallet, comb and hankie. Now I'm not so sure, my boat could have been badly damaged by the pontoon when the boatie in front created a big wave when he powered onto his trailer and rocked our boat against the pontoon, while I was going to the trailer park to get the cruiser/trailer.
Another boat on another pontoon had 2 of these bouys ie approx 30cm long by 10 cm wide white plastic hanging down, probably tied to the boat by bungy cords.
I am not getting into the handbag set, but are seriously considering 2 plastic bouys. The downside of course is they take up storage space.
Comments appreciated
Peter