If you are worried about people stealing your ideas—don't be.
Ideas are a dime a dozen, it's the execution that really matters. If you don't have the ability to execute it yourself, or lack the interpersonal skills to bring together to team to it brought to fruition, then the idea was never worth anything in the first place.
If you genuinely believe your idea is a game-changer, then get it patented. If you can't get the patented, then it wasn't sufficiently novel anyway.
OP labeling himself as an 'old timer' might not be fond of IP laws, patents and whatnot. But he should have already known what you've just said — ideas themselves are usually cheap enough to be near worthless.