Suggestion:
Both at the BTM and for most true flat patterns, it seems, it appears (got to be clear about that) that one (at least I did) gets much more reaction playing an inside line than trying to go down the boards. I used a medium strong, light load particle drilled average and got extremely little reaction trying to go down the boards. playing between the 3rd and 4th arrow, (desperately) trying for a backend with a breakpoint around 12/13, I did get one. Inside was slightly less sensitive with maybe 1/2 - 1 board of area. Outside, there seemed to be no area.
Wished I had brought one of my VERY strong balls, but airlines & travel for the USBC made things tough. Maybe next year I'll ship balls separately like many people did this year.
I also suggest forget about drilling an AA; drill a VERY strong oil sucker for the BTM and bring some "hand", release consistency and speed control.
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"None are so blind as those who will not see."