I've not log got back from a little trip to Tarawera where smelt flies were still doing damage but casting a globug when you are parked up cooking your lunch is always worth a shot and this is how the bigger fish can be targeted.
Here is the best my mate Mark picked up from that trip.
Also, for this time of year the new Montana Fly Company hip flasks from Manic Tackle Project are essential. When the fishing is slow in the cold weather there is always the comfort of hard liquor to warm the insides.
So get out and make the most of the season until these waters close. Then you have to think about your winter fishing options, some of which are very, very underrated...