A bit off-topic Watty - but I imagine you've thought through how to get tinnie from your set-up camper, down to the water?
I'd played with collapsible boat trailers and boat racks on campers past - but have moved away from that as was PIA getting boat or Kayak to the river/sea, once set-up at camp. Now planning on putting boat on fourbie's rack instead, though that'll take my weight to smidge off max GVM.
I reckon porta-boat or kayak for camper boat rack is best (then use trolley to get X metres to water), or if boat >30kg, then top it on fourbie.
Oh - and I'm a RIB guy - but that's cause I need sea-going stability. They can be swamped and will drain. And they are light(ish) for their length. But RIBs ain't gr8 for top end estuaries when the crocs are biting ;p
G'luck with the deciding.
- Finners