I use the traditional mosquito coils, I find they work well even in the Pod with all the screens open. The coils don't really kill the bugs, it's a nerve agent that makes them stupid and slow, they tend to land and stay there waiting for me to crush them. Thing is that when the coil goes out (I just burn small pieces) the mosquitoes slowly regain their senses and start buzzing me again. The coils don't do much for black flies but once inside the Pod they all congregate in any spot where there is the most light. Normal procedure is to put up the Pod, let the black flies congregate in the brightest corner and then smooch them, you can eliminate a ton of them with this method. Any remaining black flies keep hanging out near the ceiling and don't bother me at all until darkness arrives and I start using my headlamp which they are attracted to.
I'm not familiar with Thermacell but I see they either burn gas or use a battery. The last thing I need is yet another device requiring power, I'm already dragging around about 5kg of batteries and 2.5 kg of gas canisters. On this trip I carried two packs of coils (16 coils total) but they are very light.
I've always carried a compass but because I mostly travel rivers (and have a GPS) there is rarely a need for it. On a river it's important to know location relative to upcoming rapids but not for navigation (just follow the current). The GPS also works well on smaller lakes when one is looking for an exit so my use of a compass is rare. The day I got off track it was simply the result of not paying attention combined with a lack of distinct landmarks to aim for. The other issue crossing the Smallwood was that my (1:50) map sections (on 8.5 X 11 sheets) often showed almost all water. I really wasn't prepared for such a massive body of water, usually when paddling something like this I would be staying close to shore but my route in this case required a number of long open water crossings, staying closer to shore was simply not a viable option.