We’re all built different — and I’m on the, let’s say, skinny side.
6’ 3”+
160 in shorts
Strong enough, but not an athlete.
Fairly experienced XC skier.
For reference, I skied 220s in the (distant) past.

And I would have no problem skiing that length for a Light XC Tour Ski (as long as the camber matched my weight).
For example, a recommended ski length for me, based on height, might be 210, and based on weight might be 180.
That’s a 30 cm difference.
I think the biggest consideration is being able to engage the wax pocket for K&G, but I’m sure there are other considerations that would move the scale one way or the other for size selection.
I have already committed to a pair of 210 MR48s for this season, but am also looking for a wider ski to handle other conditions (deeper and/ or steeper, spring corn downhill, etc).
I’m sure it can vary by type of ski, so let’s say XC to XCd, with maybe some XCD.
Not skate, not race, not mostly track, not XCD
I keep leaning towards longer (my height), because of my past skis (ski tips to the wrist is 220 for me). But am wondering if I’ve got it wrong, and should really be giving my weight more consideration In size selection.
Any comments / thoughts / recommendations are appreciated.