Haha this was so fun! 😃
First time around I tried the normal method, building up a large ship and then getting it to float. It did make me think though... What about doing the sky strat?? On my second playthrough, I tried this: no extra couches, only balloons. However I only got barely 2m off the ground before my balloons made my boat weigh over 1000KG.
Final attempt at making an aircraft rather than a boat. Plan was to go deep into the ocean. No couches or balloons, until I had reached 1000 coins. I collected all the coins and started adding balloons when I wasn't deep enough, and only got on 500 balloons before reaching the surface. However, it did launch me up 30M before falling down, so at least I did get a good look at the sky fishes!
Although this game did deny me the ability to live my UP fantasies, it was a lot of fun! As was evidenced by the time I played it 3 times through 😂 Big well done!