Varnish vs Teak Oil in Alaska (looking for advice)

[Jayson Russell]

Hey Gang,

   I've been spending quite a bit of time taking the old varnish off of my boom and interior cabin. Being based in Alaska, we have big temp swings (-10 to 75 F), and I'm debating just teaking all the wood and holding back on varnishing it. The thought would be that I would just have to apply more teak oil to it every time I went out, but I wouldn't have to deal with the varnish peeling so bad again like it's doing now. Maybe this is just part of the regular upkeep on any boat regardless of the temperature? This is why I'm coming to you guys and looking for advice from anyone willing to give it. I'm admittedly very new! Thank you ahead of time for your replies. 

   -Jayson