It is quite possible to drill down thru the top plate and the nogs and drop a draw string with a weight on it down thru the holes to use as a draw wire, it does take quite a bit of practice and the trick is to not drill out thru the gib

Got any long drill bits that can connect together?  (you can attach them as you go...just dont drop it down the hole ! 

Just make sure your 100% confident nothing isnt in the cavity i.e. electrical and plumbing potentially going through/past. 

the weight and string sounds possible, didn't think of that!

Where/What to buy the cheapest end plate for cat6 cable? Was originally planning to have the cable coming out of the wall but that might not pass WAF

I've watched most of them. But just wondering if people actually bother or it's too hard for the average fella.

Once the holes are drilled I try to attach a draw wire to the drill and pull it back ( or drop it down )

If that fails I wise curtain wire to get through the nogs / dwangs http://tinyurl.com/z8sxngu

I have put hooks on these in the past to grab other wire in the cavity.

Also works from the bottom plate to the first cavity if there is a flush box.

An alarm installer i know uses a pen chain ( like securing a pen in the bank or supermarket ) and a piece of string. That works for him, I could not get it to work for me.

John

face plate, or flush plate works .... eg from jaycar: https://www.jaycar.co.nz/australian-flush-plates-single/p/YN8015 

I've been using the PDL 600 series faceplates with their cat6 keystones, electrical wholesalers like Corys or Redpaths have them and don't seem to have a problem with cash buyers - the Redpaths I go to tends to give me 50% off RRP without me even asking. The bonus is that all my other switches and sockets are all PDL 600 as well so the cat6 sockets I have around the house don't look too out of place.

chevrolux: A short piece of chain works really well ....

Not an exact link (NZ Whole sellers have them for about $80)

These over the years will have many uses for the home.  I got some as an apprentice and along with a cable snake have got out of some situations more than once

http://www.globalpc.co.nz/electronics/Tools/Misc-Tools/Product-Specification-T4648.aspx