Tip o' the Day: Crew Skills and Perks are the secret ingredients that turn your vehicle from a modest tank to a superpowered killing machine.
Many will tell you that the Sixth Sense perk is king, and they're not wrong - with a visual and audio indicator that lets you know when you're spotted, your chances of survival will be vastly elevated.
It's definitely possible to stack the benefits of both Situational Awareness and Recon, but it's probably a better idea to invest a Skill/Perk slot into Sixth Sense before doing so.