I know I have a problem with getting up on my toes on my pulls too.. I don't quite get why I do.
It's because you are really tall and you have flat shoes (it's a tall person thing), if you get shoes with some heel you will be able to keep your heels on the ground longer and push through them longer. Especially when you are pulling from the floor. (like in snatches and cleans) You can try the running shoes, but I think you will have stability issues with them.
I guess since I can do more in power clean than in clean I should just not pull it as hard and that way I have to dip under it faster?
No, don't do that. It will jack up your pull. Use more weight with the full clean. You will be forced to get under the bar faster. Let me guess..... when you go heavier on the full clean you always dump the bar (lose the weight forward) since you would be leaning forward some and not catching with your body more upright?
You will be able to keep you body more upright if you had shoes with heels ion them. The other part is just committing to a full front squat. (you are not there) Practice with a light weight (the bar to start) squatting into a full front squat. Squat till your calves and hamstrings touch, relax, and just hang out there. Get used to being in that position, since that is where you should be catching a full clean. It will usually not work well if you stop at any point short of rock bottom. (when catching cleans and snatches)
I've tried to not go as low in the past, but I never got up the same amount of weight that way.
Thats because you are woppling on your toes and are using none of the power from your hips. This is another area where a weightlifting shoe would be beneficial. You'd be able to realize the strength and power from your hips better.
Should I use that shoe for all my oly pulls and for front squats?
Yes.
what about back squats? Keep using the chucks?
Depends if you are doing a Oly squat or a PL squat.
I'm afraid my front squat and back squat will go down if I wear a heel since it's harder to "spread the floor" with them.
Spreading the floor has more to do with a wider stance PL style squat. If you are doing an Oly style squat your feet will be much closer together and you will not really be able to spread the floor as well. They are just 2 different types of squats, each with it's own characteristics.
So your PL style squat would be the same or higher and you would be doing Oly lifting squats the way they are supposed to be done. (at least from a catching the bar standpoint in the snatch and clean)
They are not good or bad. They are for a certain type of lifting. Just like weightlifting shoes are for a certain type of lifting. Shoes are like anything else, you will use different ones for different applications.
is it just because they don't have a heel?
From an Oly lifting standpoint, that is why they are not the best choice.
why is it bad not to have a heel on shoes you use for weightlifting?
For all of the reasons stated above on your different lifts. It is not "bad" so much as it is not the most efficient footwear to use for Oly lifting.
if you don't have flexibility issues or anything like that?
You could spend months fixing a "flexibility" issue, or you can put on different shoes (that are made for the lifts you are doing) and start focusing on getting better at the lifts.
Again, with your height and the length of you legs, you are going to have to have a lot more flexibility in the ankle to do the Oly lifts than someone who is shorter. (like me for example, where I need very little ankle flexibility)
Looking at it from that standpoint, the weightlifting shoes are more beneficial for taller people. (I believe that is true)
Do they only help in the catch if you have flexibility issues?
They will help in the catch. As I mentioned above. It may not be a "flexibility" issue as much as it is a "longer lever arm" issue.
or do they help in the pull itself too?
Yes, because you will be able to initiate the pull with your hips, then more easily transfer to your toes at the end of the lift.
Thought - (there is a lot of discussion in the gym lately about not going onto the toes at all and taking more advantage of the strength and power in the hips. It appears that the Eastern European style is less of a getting onto the toes and more using the hips. We had a coach in a few weeks ago who does not teach his athletes to get onto the toes. He says the speed of the lift is a lot faster when you do not rise on the toes. I have to seriously consider what he is saying since he has over 50 kids on his division 2 football team cleaning over 300lbs. Which is something at that level.
After having tried both styles in the snatch and pulling movements I have to say that there is something to this. I am not ready to commit to doing the Oly lifts on way or the other, but it is something to think about. This may also be well outside the scope of the rest of my post)
I know this is a lot of stuff. I hope you find it helpful.
"G"