3 is more stable than 4. (No possiblity of rocking with only 3 as opposed to four.) However, most of our equipment has a square footprint, hence the reason for 4.
If you can, use three, but sometimes it in not possible, because the unit is too large to permit this, or there is no optimal place to put the third cone. Four is then the only option. Good Luck!
If you can, use three, but sometimes it in not possible, because the unit is too large to permit this, or there is no optimal place to put the third cone. Four is then the only option. Good Luck!