Lots of good advise.
I've called cats from the harwoods and pine thickets of the east to the mountains and even in the deserts of the southwest. Many people call bobcats while out with intentions of calling coyotes and do quiet well. When this happens to me I take it as a bonus. However sometimes I want to target specifically bobcats and I do set up a little differently and look for different terrain. Bobcats as a rule (pretty good rule) prefer the thicker stuff. Their tactics in the way they aproach a call is also generally different than a coyote's. A coyote will often rush a call or may circle to the downwind. Bobcats will sometimes come pretty fast to a call but will slow way down once they get close and put a stalk on the call. This is where different tactis on your part will pay off.
Bobcats will come a good ways to a call but not near as likely as a coyote so set up close to good cover.
Bobcats as a rule don't like to cross a lot of open ground. If your wanting to call cats give him some cover to use for the stalk but not enough that you can't see him do it. Tall grass or low brush is a no no unless you have some good elevation to see down into it.
Electronic calls are not a must but I will garantee you will see and kill more cats with a remote controlled e-caller. Remember the cat will be stalking the caller. If the caller is you then the cat will often have cover between you and him. If the caller is a remote e-caller then the cat will not be putting the slow stalk on you but the call. This will up the odds of you seeong the cats considerably.
Constant sounds (I use almost exclusively constant sounds even while calling coyotes). Constant sounds will often time keep the cats attention and keep him coming. Cats since of smell is not good so he relies heavily on being able to hear his prey. Once he is close enough he will also depend on his excelent eyesight. This is where decoys come in. Anyone seriously considering calling bobcats need a decoy. A simple feather on a string will work but I like the commercial decoys a little better as they are not reliant on the wind.
I hear it all the time that cats take a long time to come to the call. While this may be so I believe its over stated. I believe most cats come fairly quick to the call just the set ups some guys use force the cats to slow down or hang up making it seem that it took them a whle to get there. Cats typically don't stalk the call from 500 yards out. they close the intial distance pretty quick. It's the last 100 or so yards where they slow down to a crawl. If you set up properly, give them some stalking cover and use a remote e-caller and a decoy your odds will go up dramatically.
I honestly believe that guys that are seeing cats after an hour on stand probably had the cat closer for lots longer than he thought. If you want to sit on stand for that long be my guest as you can certainly call cats at those extended times. For me though my stands last no longer than thirty minutes.
When I break a stand in good cat country I don't just get up and leave either. I slowly stand, look around, take a step, look around and so on. Many times a slinky cat will be there that you never saw. I can't tell you how many cats I've caught hunching down trying to hide with this tactic.
Sounds to use. I tend to use the basic rabbits, jacks and cottontails. I like the busier sounds as a rule, but I like them for coyotes as well. I like to get the excitement level up and create a sence of urgency with my sounds. I've called them with fawn in distress on lots of occasions too. Bobcat in heat sounds work very well at times and I've often used them to get a hung up bobcat to untrack. Rodent sounds are also very good. Don't be afraid of using different sounds but I would hesitate to switch to ofetn when trying to call cats. They can be finicky and sometimes reluctant to come. You may not no one is coming and by switching sounds you could get him to put the breaks on.
Last but not least. Don't get in a hurry, especially once you see the cats responding to your call. they will not spook from the caller like a coyote will, but any false move from you will surely be detected by him and could force him to retreat. Let him come, take your time, and take him when he is close.
OK, one more thing.... When you do shoot him and he goes down like a sack of taters don't assume he is dead. Cats are mostly muscle and are not impressed with hydrostatic shock. I've seen lots of dead bobcats regain their composure after a few moments and get away. Some were never found and some were found only after lots of down time looking.
Good Luck on the bobcats. Let us know how your hunt goes with Paul.
Good Hunting, Have Fun, Be Safe and God Bless,
Byron