My major problem seems to be that on my B6100 there is only the slightest bit of curl up from level position when the bucket is on the ground - maybe 3 - 4 inches.
The technique I would like to use is to drive into the pile with the bucket low and level then curl and as soon as the curl is complete start to lift. Trouble is my FEL controls have two levers - one for curl/dump and one for lift, and the curl/dump has priority. That is if I pull back on them both, when the curl hits max the pressure relief valve opens rather than having the hydraulic flow pass on over to the lift circuit. So I have to drive into the pile, pull back on curl, sense when it hits max and then pull back on lift all the while making sure I don't lose forward motion.
If I'm successful, I'll have a full bucket but It will only stay full while I drive If like others, I raise it well above the hood of the tractor and "bump" the curl back and forth to settle the load into the back of the bucket. I never drive with the bucket raised above the level of the hood - too much chance of a tip over with the CG that high.