What is with this easy method:
First:
Let s be the number of surges you have.
Then m:= s/3 (round down), d := s-2*m
You start each adventuring day with 'd' surges and each milestone you get additional 'm' surges.
So if you have a 'standard adventuring day' with 5 to 6 encounters and 2 milestones you have exact the same amount of surges as in the standardrules but you have to be more careful with them during the day.
Second:
Increase 'd' and 'm' by 1 each but make the use of daily attack powers cost one surge. Again after 6 encounters and usage of an daily attack power every other encounter you have the same ressources as RAW.
But if you have a shorter day you have less resources - you still can use as many daily attack powers as you want but at the cost of surges. If you have a very long day you will have no daily power any more but at least you have more surges to tough it out.
Important: if as a GM you like to use very hard encounters early in the day remember that you can declare a milestone after the first encounter if you want you are not bounded to the every second encounter idea.
Be careful with 'durable' or items which give surges - the bonus should increase 'm' only. so if you have 10 surges +2 from durable you hav d=6 and m=3 (not d=m=4) so you still have the same amount of surges after 2 milestones and you are less in danger of killing someone with a hard first encounter.
First:
Let s be the number of surges you have.
Then m:= s/3 (round down), d := s-2*m
You start each adventuring day with 'd' surges and each milestone you get additional 'm' surges.
So if you have a 'standard adventuring day' with 5 to 6 encounters and 2 milestones you have exact the same amount of surges as in the standardrules but you have to be more careful with them during the day.
Second:
Increase 'd' and 'm' by 1 each but make the use of daily attack powers cost one surge. Again after 6 encounters and usage of an daily attack power every other encounter you have the same ressources as RAW.
But if you have a shorter day you have less resources - you still can use as many daily attack powers as you want but at the cost of surges. If you have a very long day you will have no daily power any more but at least you have more surges to tough it out.
Important: if as a GM you like to use very hard encounters early in the day remember that you can declare a milestone after the first encounter if you want you are not bounded to the every second encounter idea.
Be careful with 'durable' or items which give surges - the bonus should increase 'm' only. so if you have 10 surges +2 from durable you hav d=6 and m=3 (not d=m=4) so you still have the same amount of surges after 2 milestones and you are less in danger of killing someone with a hard first encounter.