Hey barrynfla,
Welcome to the forum and you will find there are many possibilities for rod holders even on the older kayaks depending on the gunnel width. My favorites RAM Mounts have bases both square and round that will fit most gunnels. Scotty too has many options just alot of the choices are not readily available in your local sports supply store and you need to order from the online catalogues.
Placement of your rod holders of course is a mattter of personal taste. Many people opt to have a single rod holder between their legs where others like them on the gunnel.
The milk crate with PVC or you can buy a prefab 3 or 4 rod holder and attach with tie wraps to the milk crate. The crate holders are great for transport but somewhat awkward to have to always reach back for your rod when you need it in hand. I prefer gunnel mount rod holders in front of me.
I am sure many will add pictures of options open to you here.
Online catalogues for Scotty & RAM:
http://scotty.com/fishing-gear-equipmen ... olders.htm
http://www.ram-mount.com/Products/Kayak ... fault.aspx
My setup is as follows:
I have upgraded my simple milk crate to a Crate Mate which are no longer in production.
I hope it helps.
Revo
Just kidding.