

And yes, Birdwatcher is great. I bought the plans for IMB; if I ever finish this one, that’s next. It is just short enough to not have to be registered in my state, and you can camp in it easily. And I think the sit inside with windows thing is neat. Safer to bring nieces and nephews along.
Actually the cartopper was used as a guest cabin towed behind a larger boat also, but one person only.
Here is a video of someone sailing the IMB https://m.youtube.com/watch?v=XGVhZzj3JlE

You can save a lot if you redo your own drain field. There are bottomless trench options that make it easier. When my BIL was having issues, we did it all by hand in a weekend with rock and perforated pipe, and it was enormous. Looked like WW1 back there.
It’s legal to make repairs yourself in my state, but once the grass grows back, who is gonna know anyways?
We improved his by 90ing up to cleanouts just below the surface. Put some scrap metal by each one so you can find it again. Then you can jet out the system downstream without hoping your line jets into the correct tee.