i have very fine thin hair.......my own mother says i have 'baby hair' (she has thick good hair, thanks for giving me your hair daddy!)....i wore individual microrings and my hair just couldnt take it

soooo, i can just imagine the weight of a weft hanging by a few microring'd strands of my 'baby hair'.....  poiiingg poiiiing poiiiing (that's the sound of my hairs pulling out)

1. The first time I purchased the ready-made weft with microrings sewn on them (EZ Weft).  Their video tutorial was very helpful and the method looked great, so I had to try it!  For that install I purchased the 16" length and enlisted a beautician who was willing to learn how to install from the video.  She did a great job and the install took only 1-1/2 hours.  However, the hair was a yaki type, and tangled so much that I couldn't wait to get them out!  And the rings were very small, placed down from the weft a bit and were very difficult for me to remove by myself.  They wouldn't open up so I ended up using nail clippers to get them out. 
2. I then ordered Bohyme Gold in 22" length wefts.  I measured my wefts across my head then cut.  To seal the ends of those cuts I "seared" them with a lighter and have no shedding.  (I see other members use different glues).  I had some microrings left over from hisandher and these were much sturdier than EZ's.  I zig-zag sew 2 wefts together before putting on the rings.  I sew my rings about 1-1/2 inches along each weft (by hand) using wig thread.   I hang a mirror in front of me, so that I can see my back side when I'm installing.  It works, but would be much easier if I had assistance on the back.  You have to get the pliers to clamp just right so that you can open them again. 
3. I used the silicone-lined microrings this last time and found they hold very well.  My only problem was that some of them squished out the silicone when I clamped with the pliers.  I then had to clip the bad ones out and sew in a replacement ring (while on my head - tricky!).   I'll use the silicone ones again, but will use a smaller ring for the top weft.  The silicone ones seem more noticeable to me.  I'm still playing with exactly where I should sew the ring onto the weft - but so far I prefer them JUST above the weft.  See the pics by clicking link on my signature.  This allows me to get the plier back into place for removal. 
4. I see rings available that have thread grooves on the inside and I won't try those - they MUST be hard on the hair!  The reason I use leaders inside the ring is so that I can grab enough of my hair to pull through, without injury to the silicone.  When you pull the leader full of hair back through the ring it should give just a little resistance, too much means you have too much of your own hair and need to reduce that, or too little resistance means you risk a ring that is going to "slide" out on you. 
5. Another reply here made on brushing . . . I use an extension brush only on my scalp and haven't had any rings pull.  I then use a good regular brush from the length of hair. 
6. I have had great luck with the microring/weft method all in all and will continue to use this for another year (?) until my own hair is a few inches longer.  The only downside is having to resew the rings in place for each install.  If I were to do my hair completely in one day to include uninstall, color, condition, sew in rings/re-install, blend - it's a good 6-8 hour process.  But that is doing it myself.  A helper would cut the uninstall/install time in half.   Best of Luck to you, hope this helps you!