Having had an interesting low level tour in the ravine past the runway while building flying speed
, I am now a big fan of carrying a couple spare jugs of automotive windshield washer fluid in the car if the a/c I'm about to fly has been parked outside.
I am no longer a fan of simply scraping between the rivet lines.
Yes, do keep it well away from the perspex$$$$$
And make sure the wing and tailplane sparkle.