While I totally agree that dipping mats, nets and slings can help, drying them out totally is also a requirement, and not flitting from venue to venue does also help as in most British summers it is rare to get good enough hot dry weather and UV light to kill the virus. This year is an exception!
Another part of the problem is of course fish movement, legal and illegal. I have written in the past about fish being moved from fishery to fishery by ignorant 'anglers', fish theft or even 'legitimate' movements within a club.
I have seen carp moved from a small park lake into a syndicate lake (now lost to most anglers), seen fish moved from the river Gipping and put elsewhere, into some quite high profile fisheries (not under current managements approval I must add) as well as other local lakes.
These fish movement comments have made me enemies locally as I have stood up to those doing it, and named and shamed them locally and nationally.