Hi Lady B,
Pin shooting is/was a passion of mine. There are many variations of "pin shooting" and not really any standard since the Last Chance matches of old.
We have used full sheets of 3/4" plywood for cheap tables , mounted on saw horses -- not as good as a metal faced table but it is cheap.
Some "classes" I have entered--- "Main" - 5 pins set one foot from the front of a 4x8 table , Nine Pin -- 9 pins set one foot from BACK of table , .22 class -- 5 pins set on very edge of the back of table and have also shot .22 at the "necks" that are sawed off of shot up pins, Shotgun -- 5 pins set one foot from front of table {buckshot only} and Revolver -- 5 pins set same as Main and have also shot Revolver where there were 7 pins with a required reload.
Try a search for "Second Chance Pin Shoots" or pm me for more info.
Have fun --- GF123