I use both as the hair funnels are so expensive, and having a builder for a brother means a lot of free pipe (hence I have a very large hair tube inventory). I find using the rectangular gutter attachment at one end makes them more stable to mount on the ground or a platform must better, and I can also mimic a hair tube a bit by having tapes in the bigger rectangle cavity, or in the smaller circular cavity.

for years now I've used single sided cloth tape (apparently masking tape and that brown packing tape leave too much glue on the hairs which makes ID labour intensive), but mount it by joining the ends together to firm a circle, then put my finger in the middle to stick it to the inside, and flatten it out as needed to make a hole in the centre of the tube. This means (a) small things like skinks and frogs can navigate throught the loops of tape to avoid getting stuck (b) big things like Quolls to gliders have to brush against several tapes to enter the traps (you obviously don't put a loop in the middle-bottom). Of course, doesnt work for little things like planigales but thats what I use hair funnels for (I use the larger pvc for medium to large species) but I get rats, bandicoots, wallabies, cats and dogs (possibly labradors).

Sorry for being a bit thick, but I can't envisage your set up from the description. Can we post drawings or pictures?

I always use Faunatech hair funnels. I know people decry their record in reptile by-catch, but in all the time I have used them I have caught only one small Lampropholis. And Faunatech are using a new formula now for the "fauna-goo" in response to that problem.

Bandicoot people also say that bandicoots aren't detectable by the funnels, but I have also always got Perameles nasuta in places I expected them to be. No Isoodon obesulus yet, so there may be a species-specific issue (but I don't work in their habitat as often), but otherwise I still think they are a fine tool in our tool kit. And they are a LOT easier to handle than the double-sided tape.

One word of warning though: don't set them up with bait etc in your front garden before heading off with an assembled set of traps. I got a lot of Labrador hair that way.