Budget dictates that a decent quality folding trout net is unlikely to be a viable option. I can forsee a bodge job with a cut down landing net pole section or bank stick and a bit of foam lagging. Just need a cunning plan for a low cost way of securing any net contraption I come up with to my person.
Sam (!)
A couple of cheap D-links (max 50p or a quid), a length of nylon cord, and a magnetic net release. I've used the Diawa one for donkeys years & its never let me down. Easily adjustable to balance the weight of the net against ease of release & at around £13 it won't break the bank - & its a bloody sight cheaper than the £30+ Orvis job!
Attach one half of mag release to head of net using a cable tie - this is a semi-permanent arrangement. Attach other part of mag release to clothing similarly (I use the D-ring on the back of my vest when trouting). Tie D-links to each end of cord (adjusted to suit, but around arm's length). Clip one end of cord to net handle (drilled to suit), other end to clothing (wader belt, vest or some-such) & you're away.
To net a fish just pull the net from the mag attachment & do what's necessary. Having landed the fish you can just drop the net in the water whilst you're unhooking etc - the cord will stop it disappearing.
Replacing the net is easy enough - just wave the head in the vicinity of the mag attachment & it'll relocate fairly easily.
Avoid using bungee cord - its only a matter of time before the net gets caught in an obstruction, shortly followed by you getting smacked in the face as it pulls free - believe me, been there, done that!
hth
Daiwa Magnetic Net Holder