Well guys.
I recently posted a thread about the same thing...
I have a deep water culture bucket experament I've been doing for arount two and a half months now.
It's been topped a few times and has spurratic new growth.
The fan leaves, or feeder leaves, are so big that they sometimes cover up my new growth from getting light.
I usually cut off the leaves that are blocking light. Sometimesmes ill try and tuck the leaf under a branch to try and move it without cutting it, but tuey always bounce right back. I don't ever cut off a fan leaf that's growing around the outer egdes of my plant, only the ones in the middle that block my new growth. so the growth comes from the middle of the plant.
Sometimes I'm a little iffy about chopping of the big huge ones as there's only like four or five that big so far. But with the trimming, I noticed my new growth is taking off like wildfire!
My personal opinion is that trimming fan leaves in moderation, and when needed, is ok...
Here's the top of my plant I was talking about....
It's kind new to me as well, this trimming stuff. I usually just let em grow!

Good luck to ya!


PGS420