Once you get used to it, you don't need to look at the whole line.
Examples
#1 looks at themselves
#2 looks at 1
#3 looks at 1, 2
#4 looks at 1, 2, 3
#5 looks at 6, 7, 8
#6 looks at 7, 8
#7 looks at 8
#8 looks at themselves
Give #1 and #8 to the more unfamiliar people while giving #4 and #5 to the more confident. (For Statics, I guess)
Tips for #4 and #5
Alternatively look at your half of four people, identify how many dooms are in your group of 4, then whether you have doom or not.
Examples
#1 looks at themselves
#2 looks at 1
#3 looks at 1, 2
#4 looks at 1, 2, 3
#5 looks at 6, 7, 8
#6 looks at 7, 8
#7 looks at 8
#8 looks at themselves
Give #1 and #8 to the more unfamiliar people while giving #4 and #5 to the more confident. (For Statics, I guess)
Tips for #4 and #5
Alternatively look at your half of four people, identify how many dooms are in your group of 4, then whether you have doom or not.