4-way LST till end.I think it is superior method because with 4-way you are actually doubling at begining(thats 2) then doing 4 LST(that is 2x4=8)then you are toping again(thats 2x8=16)and you lst again and that is like 16xalot cause you dont get 2 tops from LST you get up to 30 tops from just...