Breeding help? Red coastal Jag x ???

[DennisM]

There also seem to be Tiger or Striped forms, how do these work genetically and what is their origin?

tigers are a polygenic "morph". they are not genetic in a recessive/co-dominant sense. line breeding is the way to propagate this "morph". you will see references to super tigers, but this is not accurate in the way the term super is normally used in the hobby. it's a label that is attached to snakes that show an extremely high level of the tiger striping from tiger to tiger pairings.