It's gonna be pretty concentrated, I don't think you need to make it even more so. And yes, hot but not boiling. I brought mine up to the edge of boiling, then pulled off the stove for about a minute before submerging the disc. Then I checked the disc color and flipped it over about every 5 minutes or so until the desired color was achieved. The hot water really opens up the pores of the plastic and allows for a surprising amount of color saturation. Also, I found that this process made the discs permanently more grippy and pliable. So there is some risk that you will experience some post-dye differences in hand feel.
I also considered the worm dye, but didn't go that route because a) $10 dye for a $15 disc seemed disproportionate, and b) I could only find scented worm dyes and I didn't want my discin' bag and car trunk to stink. And I dyed for the exact same reason as you -- just wanted a disc that's easier to find. I don't care so much about the aesthetics of my discs. The grippier handfeel was an added benefit, but has made me leery of dying discs that are already 'perfect'.
if i didnt do the heat would the dye still stick
you use a like a big ass spaghetti pot or what to submerge the disc
longer or shorter in water to make it more visible on the course
the main disc i wanna do is my putting putter and main approach disc well see
and do you usually buy it off amazon
thank you for all your responses and helping me i really appreciate it!!