I've checked the wiki, tried YouTube, but nothing seems to work correctly. I like to think I've outgrown the noob-clap, so I feel like I need something else. What's something to start with, and maybe modify into something personal?

it realy depends what judo server your in

Semi-pro

C
Contract Left Pec
Contract Right Pec

Thats noob clap

this is what i do a lot i have never shared this move until now.

contract both pecs
left rotate chest
left bend lumbar
extend abs
contract left hip
extend right hip
grabby hands
contract wrists (this a safety precaution as you wrists could break)
you may also like to incorporate some glute movements.

i play in semipro judo rooms and this move would work over 80% of the time
with a bit of tweaking this move pawnz ass in aikido rooms. (ive beaten 3rd dans with it!!)

hope this helps good luck!

Hold limbs or leave them relaxed?

Hold all.
Extend left glute.
Extend right glute.
Extend right hip.
Contract left hip.
Contract right knee.
Extend right ankle.
Contract left ankle.
Relax abs.
Left bend lumbar.
Left rotate chest.
Extend left pecs.
Raise left shoulder.
Contract left elbow.
Contract right pecs.
Contract right elbow.

Can do some variations like extending neck to make your arms thrust forward faster but render the legs more or less useless.

Toy around.

Sygnus i have a great opener ill write it down.

click C
contract abs
relax left hand
contract left elbow
contract left pec
right rotate chest
right bend lumbar
extend right pecs
lower shoulder
contract right elbow
relax left hand
extend right glute
extend left glute
extend left hip
contract left knee
extend left ankle
contract right hip
contract right ankle
and relax neck also remember no grabbing
Also if you know the moderator Tamer0 ive decapped him ingame with this opener ill show you the replay actually the one i used in this one is the older version that has more hold you can use it i guess but the one i just showed you works alot better

@madouken as i was making my post yours came up but you raise your shoulder and a tip that i think helps is extending your left hand and elbow to get more of a spin and more momentum in the other hand but raising the arm leaves it so if they attack on that side you will probably lose your arm