I tried to use duct tape when we first got or XT225s but it didn't stick very well..
Electrical tape stretches to much so imho doesn't work well as rim tape.. Hockey
tape is to thick and can make tire changes much harder (if using multiple layers)
Since I had a bicycle shop, I replaced the rubber rim strip with bicycle rim tape..
Works much better than duct tape because this rim tape is made of nylon fabric
and has a much tighter weave and tpi (thread per inch).. Since it is made for a
mountain bike (rim not as wide) I use three layers (left, right & a center layer)..
If you can be bothered to source this type of product.. You'll have in my opinion
a great rim tape.. Since it's adhesive tape it sticks and will stay in place and will
not move exposing a spoke nipple.. Installed this rim tape on our XT225s almost
10 years ago and it is still there doing it's job (haven't needed to replace it yet)..
This rim tape is distributed by a Canadian Parts Distributor.. "Cycles Lambert"..
Retail per roll was about $12.00 CDN (good for about 8 wheels if using 3 layers)
I do not know if there is a USA distributor for this particular product.. Ritchey
(a USA company) had a similar rim tape but was much more expensive..Trace Rim Tape - Item # 02-3503-0