Wouldn’t be the best of ideas not to share. Sharing ideas is what the forum is about isn’t it. Although, I get it that it’s up to you on what principles you keep and I understand the fact that, the less crowd as per people offering a service, the more profitable and availability of customers your going to get. Still, you could always share, I know you can.
If sharing something(in general) would dilute your potential profit then it's
mostly dumb to share depending on the circumstances — this is one of them. Especially if you're trying to arb coins/tokens that aren't being arbed by the bigger players.