Hi Kaspaas.
Best way to hide the tag ends with an under wrap is to get the tags under the over wrap. Bind from left inward bind off under over wrap then from right inward and it should meet the other side under the over wrap. Time will drop an wraps with time and experiance, I have done thousands of guide binds and this is second nature to me. Normal rod binds take about 30min to bind rod.
On multiple inlays I use a long piece so only one tag would be at the start of the wrap, tape the long piece on the further end of the blank so it doesnt wrap around the blank when you do the wrap, preventing you to turn rod back to untangle it.
With tag ends tug on it to get it straight under the thread, this allows for easier and neater cut. If any threads still prevail burn them with a flash of flame, lighter works just dont keep it there! quick brush.
if any lumps after epoxy. Wait till dry and cut off and recoat. The second coat uses a third of the epoxy you would have in the first round, Or you can do the first coat very thin letting all the threads still show, then cut and add second coat, you should use same amount of epoxy you did on first round. 10ml epoxy should cover a 14' rod with 8 guides +tip.
UNDERBINDS?
Ads weight - 3times the thread 3times the epoxy.
Only use on boat rods for conventional reels and grinder rods with double foot guides. This is there to prevent the guide foot digging into the rod under load.
That said...I DO NOT grind guides down on feet!!!!! This in my books is a BIG no no, it makes sharp edges and that cuts into rod blanks seen this on grinder and multiplier rods plenty times, If you do grind it make sure there are no sharp edges and take the time to file it down smooth.
If I do an under binds on multiplier rods I only bind the section between guides and then the foot guides to meet with the center bind. Gives the same look with half the weight added.
YouTube the crap out of anything you are not sure of literately 100's of videos explaining allot of little tricks, and you learn from mistakes even more when they cost you money!
Hope this helps a bit!!!