Swell period should have it’s own overlay...

[MVRedHead]

I love windy. I use it daily as a long distance cruising boater.

In that role, wave period is often more important for go/no-go decisions than swell height. A 3 foot swell at 5 seconds would be obnoxious. But a 5 foot swell at 11 seconds would seem gentle. Visually seeing the period trends over time would be a nice addition even though you can see individual period predictions on swell points already.