I'm sure that vac sealing works really well if done right. But, I've watched guys do this after a long day of fishing and it sure seems to take a lot of work and time - and the material seems expensive.. We just put the right amount of fish and water in quart ziplock bags and freeze. They will be fine for a year +. We do a lot of fish and I just don't see the need for vac sealing if storage space is not an issue. But to each their own.