It’s an issue that is grossly elaborated by the rod length you want to use.
Wading with what i would call a short float rod (13ft and under) is quite an easy task regarding the net as in reality you only need an extension of your hand maximum. In a lot of cases you can glide a beaten fish straight to your palm and should you need to use a net, a sizable trout hand held net clipped on is more than sufficient to do the job.
If I was wading and I was using a short float rod all I’d ever need would be a none folding hand held sizable fly fishing net attached to my waist or back and it doesn’t need to be any more complicated than that.
However….. i nearly always use long rods. Regardless of whether I’m wading, fishing from a bank, fishing deep or shallow, a long rod of 15ft or more for me offers a level of long trotting control that I prefer.
It’s about keeping as much line off the water as I possibly can and having an extra 2-3ft on the rod allows me in some cases to have line direct to float even at 50+ yards down
In this situation I need something a little more complex from a net, especially if I’m likely to catch hard fighting specimen sized fish.
Folding extending nets are an option but I find most models that I’ve used a bit of a pain to deploy one handed.
Ideally you need a short folded compact net that you grab, squeeze some form of trigger, and the net both unfolds and extends positively from one hand. Does such a thing exist..? Possibly but I haven’t seen anything to catch my eye.
The other option to to use something already deployed and ready to go at the required length and have it hanged off your person. This works for some people, I see it done successfully quite a lot. Full length nets clipped up on carabiners and straps in the middle of the river ready for action.
I don’t particularly like either and as time has gone on I have shed more and more baggage of me while wading which has definitely increased my personal comfort a lot. I rarely even use a bait pouch now and I rarely ever go back to the bank to grab anything and that’s done with the use of my wading tripod.
It’s very light, fully quick release and will keep everything on your feed/net hand side in the strongest of flows and I’d encourage anyone who doesn’t like carrying excess baggage into the river to seriously consider adapting something similar.
In water Life has dramatically changed for me for the better since adopting this rarely used method of containing all my stuff to hand.
The only time I’d consider a different approach is if I’m moving after just afew trots otherwise if I’m staying in a swim for an hour or more I take this device which I made up myself. It’s undergone afew modifications over time to better improve it further.
Holds everything I need including a conventional long net in the middle of the river ready for action. It isn’t for everyone but it might just be the solution you’re looking for.