Daytime calling I am usually sitting and so I just use sticks. Fast, easy, adaptable and suits my style. I don't see that changing. Might be a different story if I was using a pistol though.
At night though we both stalk pigs and call coyotes. I do that exclusively from the standing position with a tripod. Coyotes out to 250-300 (and beyond) is not a problem at all. The main issue is not the stability of the tripod, but accurate ranging and holds. I do a lot of shooting with AR platforms but a fair amount with bolt guns as well.
We walk a lot with tripods. Especially stalking pigs. Most of that is in sandy, plowed fields. Weight is a concern, especially after the 3rd or 4th 300-500 yard stalk of the night. So what I look for is not the absolute most stable tripod, but a combination of good stability and light weight. I am sure there are plenty that fit the bill but one I have grown pretty fond of is the original No Name tripod by Two Vets. For me it is a really good blend of weight/stability. This is the one with 36 mm main legs. I actually have two of them, my main one and then a loaner for my kids/friends. One has the Two Vets 55 ball head with quick release on it, the other has an Innorel N52. Honestly I can't tell much difference between the two. I also tried a LeFotovo (sp) levelling head but really didn't like it for panning shots. I use ARCA plate mounts on everything.
Here are a couple of my rifle setups. 243 with a Thermion in an Ag composites stock for calling, and a lightweight 300 HAMR with AGM TS35-384 Varmint for stalking pigs.

