I've run sticks all my life, and feathering a clutch will tear the s^%$ out of the clutch. I haven't had a clutch that will take slipping very many times before it screws up the flywheel, disk, or plate.
What you need to do is try different RPM's. Just let go of the clutch and stuff the gas to the floor. Feather the GAS if it spins too much at low RPM launch, NOT the clutch.
Tires and gear ratios make a huge difference. When I have slicks on my car, I launch at 5500 RPM and hold the gas on the floor. I hold it at 5000 or so, and just let the clutch go as fast as I can without side stepping the clutch. The car makes a bang and just jumps, the tires never spin. When I have ET Street drag radials, I launch at 2500 or so and push the gas part way to the floor until it gets rolling. I back out of the gas immediately when it starts to spin too much.
You'll get a feel for it, but you need to learn to modulate the throttle and NOT the clutch pedal. It takes a special clutch, and it is a lot of maintenance, to control power with a clutch. I had a clutch that would do that in a chassis car with a Lenco transmission, and the clutch required constant maintenance. I got sick of that pretty quick.
89 LX coupe with 363, Forced Inductions custom turbo with billet wheel, shaft rocker Fox Lake heads, .800 lift solid roller, 6800 stall Hughes Super Glide transmission, 4.10 gear