I've been thinking on similar lines concerning feed spill.
I would like to change over to a mash but there isn't a chance that C will be bothered with the extra work.
The problem with the assortment of feed trays there are at the moment is they all tip over when a chickens stands on the edge. Some hens just have to get their feet in the feed and scratch it out.
I'm going to try a couple of these I think. I'll find something to put in the middle to weigh it down.
https://www.amazon.co.uk/Trilanco-P...p/B0085737AA/ref=psdc_340841031_t1_B0060IRPA4