The ones from Bishop in this add say they have pole gaffs. Make sure you get tree gaffs, they are a little longer to go through bark. Last thing you want is to have your hooks kick out on you 60-80 feet up. First instinct is to bear hug the tree and slide all the way down. It'll take a month to pick all the little pieces of skin off the bark and try to stick them back in place. I know you've been talking about climbing for a good while, don't know what kind of training you've gotten? A little advice, when you are spiking up a tree, keep enough slack in your flip line so that your palms can comfortably touch the trunk in front of you, not wrapped around to the back of the tree, keep your butt back in the saddle, knees away from the tree. That throws your weight onto you gaffs, and pushes them into the tree. If you get your knees up against the tree, and body straight up and down, that makes the angle of the gaffs kick out from the bark/tree. On a tree of any size, it will be the inside of your foot against the tree, toes pointing out, heels in.