Hiding Waypoints on 66i handset

AFternoon all,

                        I'm trying to figure out if I can hide waypoints loaded into my 66i handset.  For example I have top out locations of various climbs around a corrie rim marked out, but would rather they didn't show unless I switched them on to keep the map clear / uncluttered.  I've tried putting them into a specific collection and disabling it in collection manager but they still show unfortunately.  I could sync it from explore via my phone as and when needed but seems faffy way to do it!

Cheers!

Stu