Back before I had my own boat, when I did that hell of an expensive RYA course over four days, the first thing the skipper
told us on his training sloop
was 'nothing' goes down the head
that was not eaten. Toilet paper had to be put in a side bin. It came with the threat, if you block it you fix it.
Not knowing, I asked if that was normal if boat heads. After all I was on the course in prep for buying
my own boat. He told me most marine
heads can't take toilet paper, and even though this one was electric
and had a macerator he said it's worth $900 and is one if the best. I remember thinking to myself, there has to be a better way than this.
After two days one of us five students blocked it up with toilet paper. Out came the tongs and we all had a laugh that he got caught.
When I got my own boat I asked about toilet paper and the owner told me he'd never heard of 'bagging' it and he'd only experienced a few blockages when someone has used too much. So after buying
that boat, with its cheap Jabsco
toilet I used it for the first year without a single
blockage. I then replaced it when I renovated with the larger bowl Jabsco
and three years later I still haven't had a blockage with common supermarket toilet paper. 'Soft' toilet paper. No such thing as sand paper on my boat.
I don't understand why anyone puts up with a toilet you have to bag shitty paper with. Just not necessary.