Use scholl insoles (sports).
sock got effect meh? does not for me leh
long green socks is to prevent abrasion by the boots and gutters from cutting into your skin since you need to tighten the boot laces to prevent twisting your ankles.
put cooling snake/ baby powder into your socks so that your feet will not feel hot and sweaty.
the proper boots insole by SAF are more durable/reliable than whatever civilian stuff you can find.... they were designed for tough outdoor purposes and are also treated medically.
Save your money and use hardened militarygear designed for the purpose la....
Make sure your issued insoles are still in relatively new condition. If they are hard or flat, time to change.
Try gel insoles for a few days, you don't see them breaking under harsh conditions.
As long as you are not on a mission, you don't need to tighten your boots cause you won't be running around risking twisting your ankles.