thats it. but to me, triangle and L1 is "to easy", a cheap method kinda.

its like putting the ball into goal using R2 all the time. you get me.
sure i use it from time to time but i forced myself to dig deeper with high crosses. it is possible to do short lobs with the regular pass button, but as you said, its a very delicate touch. to me this is kind of a challenge (like playing manual passes). i mix it with L1 for mid high crosses or R2 for more height. nothing better than those high but short crosses. or when counter attacking and i switch sides midfield by hammering an L1 high cross with full power to the other side where my winger is sprinting! those mid high crosses can look insane!
its a gameplay features i see not a lot people are using. there is so much stuff possible... i could go on for hours! love my PES!

btw: when playing in my own half around the back and i need to switch sides, i use L1 high crosses a lot because they are faster than regular high crosses or lobbed ones (R2).
another example: when i want to get the ball to my front striker but he is man-marked by the AI, i play a mid high cross (L1) from the midfield to the striker. this prevents the defender from heading away the ball while climbing my strikers back, because the ball is traveling only 1 meter or 1,5 meter in height! they look and feel wheighty too. again: love my PES for THAT!!!

edit: for the R2 lobbed high crosses: they tend to not move that fast forward as they come from bigger height (reference to golf here/see flop shot). they are not only usefull when trying to find a tall header specialist like Dzeko or Giroud, they are an alternative to L1+triangle short passes you want to lob for only 5-15 meter.