To answer some questions, the 9 unfertilized plants are in two rows, staggered along 14' in an 18" high east-west raised bed, 29" front to back inside. The tomatoes are planted about 4" from the sides. The top rail is 60" above the top of the raised bed. Sun is currently to the westsouthwest. On sunny days, my guesstimate is that they get about 4 hours sun from the south starting around noon, and another 2 hours of sun from the east starting around 5:30.
For the past two years, we've grown mostly slicing tomatoes, but 99% end up with blossom rot. The cherry tomatoes did great however. So this year I put in only cherry/grape tomatoes of different varieties.
The front row I suckered high, and the back row suckered low to kind of tier them. However, the effect, if any is not noticeable to me.
Paul - I lived just south of Blair for a year. Miss the rolling farmland and big skies.
Given your advice (thank you!) I'll postpone the decision to prune. I'll let them grow high and flop over left-and-right, then in a couple weeks probably extend the poles up and add front and back rails at 7'.