Hi Fellow Hooper!
I wanted to reply to let you know that YES there are other hoopers on here! I find the website www.hoopcity.ca to be WAY better than Hooping.org. Check that site out! It has a forum area too where you can get a lot of help with anything hoop related! Also, I notice that you are wrapping your colored electrical tapes over the bare irrigation tubing without laying out a base. That is fine, but I have made...oh lessee....about 15 hoops in the past month so I am hoping I may have some helpful tips
I would suggest you try laying a base of tape down first, (if you want the background color to still be black like the tube, then just use black electrical and do a really tight spiral so it slightly overlaps.), then wrapping your colored spirals around that. That will help add a little heft (making for easier hooping!) and also will add a bit of padding. I don't know if you have gotten to the MASSIVE BRUISING stage haha (I currently have 4 on my left arm, one on my left hip, and one BIG one on my left collar bone!).
I don't think many hoopers use Duct tape, but I do! It does get frayed along the edges. I personally like that look, but if you want it clean and tidy then you can also always go over the edges of the Duct with some electrical to keep the edges hidden. Duct comes in sooo many awesome colors now!
Another fun idea is to wrap the colors in bands, instead of spirals. hmm that was kind of hard to explain! Here are some pictures
Now this is getting to be a LOOOONG post! One last idea for you!!! I am not sure how you are connecting your hoops, but I am going to assume you are using a coupling from the hardware store (the grey short pipe fitting things). I did that for my first like 10 hoops, and then I discovered an even better way on hoopcity!! Here is a link with photos so you can see the amazing way! I have tried it on about 4 hoops now, and it REALLY works amazingly well. It is much easier and looks totally seamless. Here ya go: http://www.hoopcity.ca/photo/photo/listForContributor?screenName=308ki8rdcv304
Hope that helps! Post more pics if you make more. I would love to see!