MacBondi:
Assuming level ground, no wind etc, If my club has a potential distance of 180yards and I drag the power meter to exactly half way along the power meter will the shot travel 90 yards or is the meter weighted more heavily at one end than the other?
No
rule of thumb is you want to hit as much full power as possible. if you have 180 club and aim 1/2 way you may hit 90 yards once but other times 70 or 110. but if you hit 100club with 90% power, u'll hit 90 99/100 times.
same applies for putts, chips, etc.
-wgticon