The importance of the length of your jacket varies dependent on what type of activity you’ll be doing. If you’re doing any type of stretching in order to try and make your catch or if you’re doing an activity like kayak fishing then you’ll have a much greater chance of that jacket riding up your back and cause you problems.
Most of these jackets are a very comfortable length and a huge positive is if they have the ability to be secured at this waist. This ability will ensure that the jackets don’t ride up from your waist and it also gives them a much better chance to not let any water in either.
A high quality jacket will have these design aspects in mind and they’d be tailored to ensure that they are as comfortable as possible at all times and also making sure that they allow for a full range of movement. Even if you feel sure of your size it’s always important to check the size listing and sizing chart to ensure that you’re getting the right fit. If you get a size that’s too small then the length will defiantly matter as it will easily ride up your back.