Paying other people sounds like the easy way to solve this but those of us who employ casuals know how much stuffing around it would be for the 'Manager' of those casuals to have 10 casuals actually turn up, on time, on a both Saturday & Sunday to each out of the way location. Without doubt, one or two of them won't turn up or will have 'a pressing prior arrangement at 2pm' or 'My mum is picking me up and she can only do it at 2.30' or 'Jack couldn't make it so he sent me, his 10 year old kid brother'. The cost whatever it is, is a lot of extra money to some and using the example of $30 per rider with 100 riders at a race meeting that extra $3000 would be much better utilized in the clubs' coffers in my view.
I have posted about this before. The one resource you are guaranteed to have at a race meeting is riders, and most riders are reasonable, realizing their obligation to carry some of the work load in this area. The organizing committee needs to get it right though. We as a club are in control of these race meetings so we should design a system that is the least 'uncomfortable' for us the riders and make all riders accountable.
What makes flagging uncomfortable?
Too long out there - Make the time shorter - spread the work load each day to 4 x 1 1/2-2 hr sessions.
The heat or rain on your back or the cold wind - Charge a little extra on the entry fees and have the club buy 10 x 2.5mtr x 2.5 mtr pop up quick shades with 2 sides filled in.
Nowhere to sit when flagging - Provide a $20 Directors chair for each flaggy.
(We are riding/racing vintage motorbikes and the majority of us have vintage bodies. After we have trashed about the track with those vintage bodies or before we are about to do same, it is crazy to have a system where we have to stand out there for 3 hours with no where to sit but a sharp, ant infested, pile of rocks or a pile of old tyres full of who knows what!)
No icy cold drinks on hot days or warm up drinks on cold days. - 10 x Esky's, 10 bags of ice, 10 large thermoses plus drinks.
With a bit more planning and initial preparation, no more than organizing & training 10 casuals to come to just one race meeting, for the entire race season you could transform an experience of 3-4 hours in the blistering heat with no shade or comfortable place to sit and a warm drink when you want ice to a 1 1/2-2 hour sit down in the shade out of the sun and wind sipping an ice cold drink.
If the organizing committee has organized all this and riders still don't do their bit then they should pay extra and be ineligible to earn race points.