I do not remember where we found the info but we bought a extra length of pipe to move it above the peak of the tent.. the stove works better now and also the sparks don't seem to fall back onto the tent like it used to do.
We have two wall tents, One for the living room and one for sleeping. we have two different types of stoves. for the longest time we had a light weight thin wall one. much like the one in your picture.. Heats the room fast but it fluctuates quickly. We have to maintain the wood more often and always messing with the flu.
In the sleep tent we got a new stove. thick walls, heavy sucker... Heats up slowly but maintains the heat longer and do not have to mess with the flu nearly as much. or add as much wood.
As far as the spark arrestor we have two kinds. The cap on one and a mesh net on the other. less cleaning with the cap but we have lost the cap off in the wind before. It is nice to have a arrestor of some kind for those days it rains..
