A new guy at our field said he uses something called a SwitchGlo in all his planes. The type he has, he says, will ignite the glo plug from channel input on his transmitter and shut itself off 10 seconds later. I'm thinking this might be great for an Ultimate where the engine barely fits in the cowl and it will be hard to get at the glo plug.
Are these any good, and if so, do they have any disadvantages?