Ive been trying to research doing this but there does not seem to be many threads covering the issue nor anyone ive seen actually do this.

 

No experience here
Could put some grease on the mounting tabs of the sideskirts, then press it into place for a mark, drill some holes. May then want to primer the holes. Tape on the outside, paint blowing in from the underside of the car.

I don't know what the mounting tabs look like to say if there's enough surface area to use double-sided tape, but if you snag an OEM set I'd be surprised if Honda didn't put enough tabs on there to make subbing in tape viable. They like using lots of clips..

If nothin' else, here's a bump

EDIT: just found another thread from a dude looking for Mugen skirts. One member stated that there's 18 mounting points. That should be sufficient to allow for tape.