Pull what - It should be the work of a split second to glance inside and note these during the takeoff roll - any takeoff roll - do you not always check that the ASI is alive anyway?
In my opinion the best task management shews that the best place to check Ts & Ps and Power is stationary against the brakes
on a short field take off-its one less thing to do on the take off roll where you need to be more aware of airspeed, acceleration and surface. You are also more likely to be on a surface or area which does not have the same protections as a licensed airfield
It may only take you a split second to check but you obviously have not sat by enough students or low hour PPLs for long enough to know differently! Delaying the check, and again its something you see quite often, on a crucial take off can put the pilot into a dangerous go - no go, area. The best place to find out you have an engine problem is stationary at the beginning of take off, not when the hedge is coming up very quickly and you are trying to make a performance take off.
You also need to be sure where and how full power is indicated, for instance what setting are you going to accept as full power-to a pilot who has never seen or checked full power before and believe me there are many, this may not be as simple as it seems, especially on an unfamiliar type.
A slight deviation but it should be rembered that after selecting anything crucial on an aircraft a check should be made to see if you have the selection you have made-SELECT - CHECK, is missing from many pilots mental check lists.
It may all sound like splitting hairs but good task management is the hallmark of good airmanship - doing the right thing at the right time.