Nothing really like rocket science, just small hint. I've found Duck Tape (or cloth tape/silver tape if you like) as a good replacement for rim tape. You can rip it to required width and apply easily just unwrapping bit by bit, sticking to rim. Easy and light.Just start from valve hole (cover it) and at the end overlap slightly. Then make a hole for valve (just cross cut). Job done.
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Step 1: Test
So far about I've done ~70km on those wheels, no probs at all. As you can see on the picture, is a flat bar racer and both wheels 110-120psi.