I teach students to do a takeoff roll calculation based on the Performance table if there is one, and likewise a landing roll calculation.
Put the takeoff roll and landing roll together and compare this combined distance with the runway/strip distance available.
If the combined distance is less than the ground run available then be airborne by the halfway point or close the throttle.
If the combined distance is more than the ground run available then have 70-75% of your airspeed by the halfway point. This is your go/no go decision point.
Be disciplined, and stop if you have not reached the desired speed.
Go back and think about it.
Remove weight, fuel/baggage, passengers, if you absolutely have to go, but still be disciplined if she still won’t get out of there. Phone the mechanic, arrange a trailor.
http://www.mpaviation.com/lessn12.htmhttp://www.mpaviation.com/gayro.htmAlso consider the departure path and the climb gradient required. What obstacles do you face?
What will the wind do to you as you rise above these obstacles?
Do you have an ‘out’?