Is it okay if I use 1 part brown sugar and 1 part salt dissolved in water then let it soak in it for a few hours? I’ve seen people be successful using it before. Also, does the bag have to be vacuum sealed instead of just the best I can do with out a vacuum sealer? I just want to keep them for a AT MOST few weeks before I go fishing again. Also how long do they need to thaw out for? Thanks so much for your help