Kidding aside, you should be able to go to Standby, then GOTO the waypoint and the route should resume, though elapsed time/distance information may (or may not) be reset. But I've never run Garmin so can't say for sure.
On mine, if I stop navigating I lose the point I was going to. I can re-select it from a list if it was a saved waypoint, or place a new pointer on the desired location and initiate a new GoTo. Neither one is very convenient, especially when the weather gets lively. It requires some heads-down time which isn't really ideal when you're at the helm with no other lookouts.