For what its worth the accelerator pump is a poor mans primer too.
The other trick to dive starting is to pull a few g's as you reach the speed that starts to flick it over, this effectively increases the AoA on one blade assisting rotation.
The little Vari-eze will stop rotation (fuel off) at 65 IAS and restart at 160 IAS, requires a few thousand feet though due 70" pitch and 56" dia prop.