Rubber Dog,
Afriend of mine had about 1500hrs plank time and did his helo conversion.
he went up north to one of the larger mustering crowds and got a job flying planks in the meantime buttering up management that eventually he would like to get into helo's.
he ended up doing the odd ferry etc for a while and they put him through his mustering ticket now he's on helo's full time up there. so it can happen if you try hard enough!