Double knot them?
That's what I do when I have them. But I change it to flat laces eventually.
Indeed.
Ian's knot is one of the most practical things I've learned about through DDF. It affects me every single day! Takes a bit of time to get used to, but once you do, you won't understand how anyone doesn't use it, or how you lived so long tying your shoes any other way.
Funny thing is I actually just learnt how to do it last week! I've seen videos of it a while back, just never actually learnt how to do it until now. And I never knew it's called an Ian's knot. But it still has the same problem of untying.
That's why you wear lace less shoes
I find that slip on shoes stretch out eventually and are more of a slip off type of shoe than slip on.