Beachbowhunter, if you do a search on here for pierce points buildalong you will find an old post of a 68" recurve. This was a long ago build and the first time I did the points..You will see a few shot of how the riser was assembled and that will show you how it is done.
To describe it in words, use a finger joint router bit to join two pieces of laminated riser wood length ways. Join the pieces with smooth on, and then when you cut into the riser you will expose the inner fingers. If you use alternating colors of wood on the laminated riser pieces prior to routing, the fingers will be highlighted and clearly seen.