I've shot a number of javelina in 34A as well as many other units in AZ. I'll PM you more specifics about 34A.
As for javelina hunting as a whole, I always look for a lot of prickly pear and water sources. Since many miles of terrain all look the same, the real task is to put boots on the ground scouting in these areas to look for sign. You need to find prickly pear that have been shredded by the javelina's teeth, as well as tracks and droppings that resemble dog turds. Once you find fresh sign, you will eventually find the javelina. They stick to the same area, within a few miles, but will bounce around a bit. I would recommend finding good vantage points and glassing the areas hard. Worth noting is that these little guys can be completely hidden in small gullies, so it is best to move around a bit for different angles. My preferred route as well is to actually walk the good areas to jump up some critters during the middle of the day, or when you can't seem to glass up any. They have absolutely horrible eyesight but great noses, so as long as you're downwind, you will have a shot. I actually feel sorry for the little guys since their eyesight is so bad, and don't find them to be too challenging to hunt (once you find them). Let me know if you have any more questions.