I wonder about bringing lots of roe but just leave most at your campsite so you are never in possession of too much while actually fishing? But I think that might still be asking for trouble...
"you must not have more than 1 kg of roe (fish eggs) in your possession for use as bait unless the roe was obtained from a commercial source that lawfully obtained that roe, or you have in your possession the freshly dressed fish from which the roe in excess of 1 kg was taken. Carry a receipt with you if you purchased roe from a commercial source."
Yeah, i assume campsite would still be considered in your possession. Just as your possession limit refers to in your possession, not at your ordinary residence. I would assume it would be the same deal, whereas at your campsite you can only have one possession limit(1kg).
However, I think most DFO officers would understand if you have cured roe, using it as bait.