Well, I’ve picked up a 10 hole fife on eBay.
Ive played the 6 hole Fife for years, that said I’m not going to be using any chromatic notes for what I’m playing. My question is closing off some of these extra holes with tape going to effect the overall sound? If so is there any other way of easily closing the holes.
I’m guessing members of the forum may have done this with keyed Flutes that were missing keys resulting in a need to seal some holes
Recently did this with a delrin flute that the previous owner had drilled with a C thumbhole. Started using a square of painter’s tape, but found that with some use the tape edges started to become tacky, and wasn’t a huge fan of the blue diamond shape on the side of my flute. Got some polmer clay from my kid and rolled out a tapered cylinder of approximately the right diameter then sliced it up and baked it. Ended up with some nice removable plugs for the flute one of which seems to be working extremely well to cover the hole.
My take on it is that a tape covering is no different from having your finger pads covering the opening. The plug is a bit more intrusive, but does not enter the flute barrel. I don’t see it being significantly different than using your fingers.
Perhaps make your own silicone plugs? Trim them neat enough and you can probably pop them in and out, and not interfere with sticking into the bore.
As in custom earpieces. Available at Wal-Mart & hunting stores, also Amazon.
Process should be similar to this:
http://www.howtogeek.com/57481/how-to-make-custom-silicone-ear-molds-for-your-in-ear-monitors/
There’s probably some other similar solution.
Silicone Plugs cut down… brillant!
Ive got some in my bed side table…a snoring Beagle you know 
And Bobs yer uncle 
Possibly (see below)…
Unless the fingering/tuning system requires these holes to be vented for other notes?
I can’t remember, is their fingering chart the same for the 10 hole, or are there adjustments for intonation? As for plugging, wax might also be useful. One heck of a deal on the fife.