Kirstey...
So 99% of GA 'enthusiasts' (pilots would have been nicer - enthusiasts dont necessarily log time!

) log in DECIMAL HOURS?
Well if the number of logbooks coming past my eyes is any indication then I must be seeing everyone who exists in the 1% who log hours:minutes then....
Airborne + 10mins is the fairest charging system of all, then chocks-chocks. Neither of these encourage the pilot to get airborne ASAP - which is exactly what hobbs does...you will find pilots skimp their checks etc., & get airborne before the engine is properly warm when hobbs is charged. So Beagle is perfectly right there.
Now if you think that 99% of GA pilots skimp their checks and thats ok....but I assume you didnt interpret the statements that way....(i hope anyway..)
As for logging of flight time..the CAA/JAA are quite clear on the matter.
[JAR-FCL 1.080 Recording of flight time]
(b)(2)(iii) Place and time of departure and arrival (times (UTC) to be block time)
So it is expected that what is logged in your logbook is block time - i.e. chock to chocks...not what the companies charge you...FlyingForFun is perfectly right on that account.