I believe he meant did you run the non lab then the lab back to back ( stop and swap) to see if what gains you had under the same conditions. fuel level/water current/humidity/air temp/ water temp, etc.

Probably will be labbing my props in winter depending the props I am testing Saturday.

OK, bringing back another old thread, I have two props to try while on vaca this week, a 21 Enertia and a 19 Tempest but the hub kit that I was sent does not work with my drive

part number i have is 835265Q02 which is for "Flo-Torq II Hub Kit - Johnson/Evinrude OB & OMC Sterndrives w/ V6, V8 gearcases, Cobra & King Cobra sterndrives 1991 & Newer"

the spacer is 1/2 the thickness of the OMC part on my boat now which is causing interference, if I run try the OMC spacer I do not have enough spline at the enf of the shaft for proper mounting

so my question is what Flo Torq hub kit are you guys using to run Merc Props??

this may help:

92 221 Liberator w/502 factory King Cobra drive