On a stick I found binding the B(Xbox) button to B+K then just sliding with my middle finger down from X to B works for me like 90% of the time. It seems pretty lenient.
No button binding? You sir, are legit. Props.snip
It is much harder than you would think from watching the video. :)EDIT: So I tried this for about 20 minutes earlier and it's way harder than Furzy makes it seem, dude is a G with his tchnical abilities so even more props to him. It seems button binding might still be the way to go for this old man.
Reverse quote!Yeah...I find myself more comfortable on a stick (because my fingers aren't as nimble as they used to be, and I'm left-handed anyway), but I need to bind a button to B+K for iMCF and Ear Slicer...mega props. 
I'm getting a hitbox whenever the government gets off their dicks and refunds my national taxes. It'll be fun relearning Yoshi completely. hahaOn a pad even in a match I'm 90% with both moves but a stick in practice with a stand still opponents I'm sub 10% percent haha!! It's too bad cause I bought a Hitbox and movement on that thing is awesome! But I can't use Yoshi's JF so it's a no go.
Read this post, I formatted the combined threads wrong.Is there a thread devoted to the subject of how to do all of Yoshi's JFs? Because this one seems to have a lot of discussion about iMCF and a:B+K...
Yoshimitsu has the following just frames:
i. : (Instant Manji Carve Fist)
or FC : (Manji Carve Fist)
ii. : (Parting Thrust)
iii. :::: (Stone Backhands)
iv. :::: (Stone Fist)
v. FC :::: (Spinning Low Kick)
vi. SDF : (Acrobatic Bliss)
vii. :etc (Manji Blood Dance:Bliss Stance)
viii. MED on aGI : (Extermination:Bliss Stance)
i. It's essential that you are start pressing 2 at the exact same time as A. You can hold down when you slide to B, but it must be in 1-2 frames. Full crouch is just holding 2 in FC and sliding a:B the same way. 2a:B+K is confirmed to work so you do not have to bind another slide.
ii. The slide is similar in iMCF but can be executed slower. Just add a K to your B for B+K. Most Yoshi players bind B+K to do this attack as it makes it simpler.
When you do this correctly it stuns them (or launches them if they're mid air). Yoshi has a chance to get dizzy so there is luck involved in taking advantage of a stun or relaunch.
iv. I will get around to doing a soundcloud for the timing of this.
v. I'm actually not sure what the timing is at all yet, I'll update this soon.
vi. Press the second K right before you land. Very strict. You can get the standard recovery if you are in the ballpark.
vii. You can mash this one pretty consistently so I am unaware of the timing. I believe it is right before you start your falling animation.
viii. You need to JF time both Ks. The first K is right as Yoshi's head his the ground and the second is just like the timing of SDF K:K, right when you hit the ground.
Any frustrations about his many JF attacks can be voiced here. Help is always welcome as these attacks frustrate many players.