In regards to attaching the boggan/pulk hauling system to the ruck, it’s a no-go in Canada due to doctrine and in our high arctic we deal with a lot of rivers/ice. Hence we have a separate system to haul and a rather convoluted resupply system. We view our rucks as a vital survival system and we bring it everywhere with us in the winter.
The new CTS ruck weighs in at 20lbs empty and the hesitation to stop using our 64 PAT ruck (Jungle Ruck to you Americans, notice the similarities and comparison between jungle/arctic)
For a new ruck look at floating lid, snow collar, compression straps, total volume 100+L. Currently I’m trying to make/convert a Danish PLCE Bergen by adding a floating lid, external carrying strap and maybe some extra MOLLE attachment points
I don't understand your doctrine here.
Don't you have SOP's for crossing ice or blue terrain? If we have to cross a frozen body of water, we have several steps that we are required to take, such as recce of the crossing site, potentially checking ice thickness, adjusting our gear in case we go through and have to ditch in order to recover ourselves.