hey jesse! in kissimmee, kinda near southeast orlando, there's a creek called Boggy creek. it runs into East lake toho. actually here's the GPS coordinates of where i launched my canoe "28.347796,-81.319949". When i was canoeing i scooped up a BUNCH! lol. you might be able to get some from land with a stick or something, just be careful as much of the property along the banks is private property. just keep an eye out for the hygro you will see it attached to trees along the side. and some pieces floating. there's also some other plant that im pretty sure is cabomba. if you want i can give you a few stems for free.