Question concerning regimental cap badge mounting

[Warhoover]

I don't have a red hackle for it yet. But, when I get one, will I need to make another hole to get the pin through the hackle loop to secure it. Since the pin and lugs will be inside the glen? Or, is there a different way of securing the hackle. I know my cousin would be able to clear up all the little things for me, but I have a feeling he may be deployed right now since I have not heard back from him.
He also sent me a new glen badge for the new regiment. Its huge! It came with a backing plate that I am sure makes it easier to position the badge when your first making the holes.

Beuth, I tried using safety pins as you suggested but the lugs make the badge stand out from the cockade and it tends to flop around. I am just going to go the route of the awl and mount it.

Nanook, As a note I don't think it is a balmorral that you are thinking of, it is a khaki Tam o shanter. It was standard issue, but you are correct no regimental badge was worn with it. But, That seems to have changed, I have recently seen a photo of a khaki TOS from the Royal Highland Fuseliers on Wikipedia. It shows the khaki TOS with the new Royal Regiment of Scotland badge mounted on the Black Watch (Government) Tartan with the white hackle. http://en.wikipedia.org/wiki/Tam_o'shanter_(hat)