Hi llavalle

"Land Locked" surrounded almost entirely or entirely by land.
Is there a river or other body of water that you can use to go from lake to lake?
I have a C172 now and looking to purchase another amphibian.
I was in Riviere-Du-Loup QC and Ste-Anne-Des-Monts QC not to very long ago. I have relatives in Riviere-Du-Loup and I looked at a C185 on amphibious floats. It sold two days later and went to the United States. The owner never mentioned he had other purchasers looking at the aircraft.
I probably would not have met his price anyways, but if you see something you like...don't wait to long...it is a sellers market right now.
There is not much my way for sale unless you go further West towards Toronto, Brampton, London and Hamilton way.
Your idea of an ultra light sounds good and you could get yourself a Recreational Pilots Permit. Not sure you have looked at that but it might be something to look at.
Have fun

Cheers...Happy Landings...Doug