Alone I do this:
1) I prospect some source nodes (3 when I am alone, one to first dig, one for 2nd dig, one spare in case do something wrong like kill it)
2) I start digging node, when bars get too low i do 1-3x CP (depends on situation), then I continue.
In most cases I avoid explosion or killing the node and I am usually able to dig 2 nodes and prospect new 3 nodes before I finish 2nd one.
1) I prospect some source nodes (3 when I am alone, one to first dig, one for 2nd dig, one spare in case do something wrong like kill it)
2) I start digging node, when bars get too low i do 1-3x CP (depends on situation), then I continue.
In most cases I avoid explosion or killing the node and I am usually able to dig 2 nodes and prospect new 3 nodes before I finish 2nd one.