I'm sorry to say this, but I don't think Woods is ticklish. No real reason as to why, he's just not.
However, that is not to say that he does not possess any prowess as a ler. In fact, he's an expert ler, who can make just about anyone scream with laughter. He is rather rough, that much is true, but he's also very observant and has a good intuition regarding which spots to strike to get someone to tears. He knows exactly whether he has to squeeze, vibrate his fingers or simply lightly scratch at a spot. Besides, it's fun to him as well. Back when he was still able to walk, he loved tickling Mason and Adler, all the while they could barely retaliate. Adler has always been one of his favorite victims, there is no greater joy than making him cry with laughter.
He's also pretty teasy as a ler. While he won't coo over how cute you are, he will leave comments about how ticklish you are here and there. Oh? What's that? You want him to stop? Considering how much fun you're having, that can't be true. He will not let up until he's had his fun or he feels as though you're genuinely sorry. Unfortunately, he also likes to talk while he tickles you to tears. Depending on how much of a little shit you've been, he might be rougher. Sometimes he just feels like tickling someone a little bit, though. That doesn't change when he's in a wheelchair either. Sure, it's harder to get a victim like this, but once he's got you, you're not getting away that easily either. Just because he can't walk, doesn't mean he's not insanely strong still on his upper body. Fight all you want, you're not getting away. It's his way of getting the enrichment he needs considering he can no longer be a soldier and all. Another one of his favorite victims is Felix. Much to the German's dismay, Woods finds him almost cute while he struggles to get away from him. It's hilarious to watch as well.
Woods isn't one for much aftercare, though. He'll pat your back and tell you to get up since it surely couldn't have been that bad. You're just being dramatic. If you need it though, then he'll let you recover a little on his lap. He's not so callous as to just push you off and have you heaving on the ground. Besides, there's worse fates than that as well. Woods is nicely warm and strong, he could easily protect you. Also, he won't go *that* overboard either. Once he can tell you're at your limit, he'll usually stop. You've learned your lesson. Or you've amused him enough. He's just a little silly at times.