turn on one of the burners to the stove and purge the air from the lines, then my propane would light on the burner
This worked for me (both for stove pilot and hot water heater pilot in rear of TT).
Recently though, I found another helpful tool;
Pencil Butane Torch
After years of spending 20-minutes plus, trying to light those silly propane heaters with a stick wedged between the casing to depress the pilot switch & endless burnt fingertips from matches or BBQ lighters .... usually with a mag-light between my teeth (and it always seems to be raining or windy when I need to light it) ... I can finally light the thing in under 10 seconds, by myself,