I couldnt climb properly or site for ages either, I've also got teeny arms so you're not alone!
Even now I can do a lot of advanced moves, I still find climbing can be a bit of a challenge sometimes so I've had to work on it a lot more (it doesn't help that my pole is so short though ๐)
Just want to chime in on the small size body ๐ (I deal with blood pressure cuff too) I am also very thin, but have developed strength I never thought I would. I have always worked out with some form of aerobics, very good power flex class for years, etc. However, when started poling it was as if I'd never done anything. It's different dealing with lifting own body weight. It comes with time, strengthening and learning new moves in baby steps. And each new trick or hold starts over with building strength, for me anyway. I use a lot of veena's strength training, it works wonders, as well as her lessons! Poling also takes patience, which can be as difficult as learning new moves. ๐ธ
Like hookedonpole, I've developed strength I never thought I'd have through doing pole but I hadn't done any real exercise since school (apart from walking) until I started pole. I literally had no muscle and now I feel strong ๐ฅ
Because i pretty much started from scratch, I had no upper body strength so concentrated on doing pole lifts and moves like the teddy hold (with hands) in order to get used to holding my body weight and strengthening my arms. It really worked and now I find a lot of other pole moves easier because I took time to develop my strength. Thats not meaning to say that I didnt spend a long time being frustrated that I couldnt do certain moves but I put the time and it does really pay off ๐
Good luck! ๐ธ