How sure are you that you really want Shaman as your tradition? Unfortunately, Charisma traditions do not play nice with scout; Astral scouting is Logic based, Physical scouting is Agility-based. That said, you can still be OK.
If you want to see an example Shaman, look in my sig and at the Spirit Medium. You can probably get to OK scout by:
-Influence 1
-Summoning from 4 to 1
+Infiltration from 1 to 4
-Lose Laser, Increase Charisma, and Stunball.
+Gain Levitate, Trid Phantasm, Increase Agility, Increase Logic, Clairaudience, Mana Window, Astral Window.
-Drop Infiltration specialization.
*Switch Spellcasting specialization to Illusion.
*Change your Mentor Spirit. I have no idea what you see Great Blue Heron as, because the internet is full of people who will post random crap about totems, and there is no single "Amerindian" culture or mythology.
http://www.firstpeople.us/FP-Html-Legends/HoneyedWordsCantSweetenEvil-Algonquin.html for example, would get you Sky Father. From an optimization standpoint, you want Cat.
*Adjust NQs, background skills, and contact as appropriate.
Optionally, you could take a point or two from Reaction for more Agility or Logic, but IMO you are better off just leaning on magic to shore those up while scouting.
The basic idea is that you scout physically with some combination of Increase Agility (so your Infiltration check doesn't suck super bad), Concealment (from a spirit), Clairaudience and Mana Window (to remotely scout), Improved Invisibility (which is pro, but remember it only works on sight, not radar/sonar/etc), Physical Mask (which does work on stuff like radar), and Levitate (to get over walls/up buildings/etc). You obviously don't want to maintain all of that at once, but I think you can do a decent job scouting. A lot of the time, you can cover scouting with nothing but Clauraudience and Mana Window.
Astrally, you can Increase Logic through your sustaining focus
before you project, then fly around with Concealment (from a spirit) and Astral Window as needed.
You should probably aim for Masking/Extended Masking ASAP because that's what you need to get past astral watchers and wards.