Usually, the only time I still hunt is in light rain or early when the dew settles. It knocks down your scent somewhat and helps keep the noise down.
Hunting in heavy rain is no fun at all.
I hunted with some Czech hunters and they have a tactic I've never really seen before, They rush a hedgerow or a stand of timber at nearly a full run. I've been with multiple guides who do this or lead me on a hunt using this tactic. It was never really successful. I always wondered if I could even get off a clean shot huffing and puffing from the rush (run). Maybe it is something that only works on Roe Deer, Roe deer are as apt to hide as there are to run. Maybe the rush (run) is to flush the hiders?