I have had the same wetsuit for about 4 years. It’s OK and there always seems to be far better, more fun kit to buy rather than a new wetsuit.
I often roll my wetsuit up in a rucksack to take to the Serpentine before work. Then roll it up wet and put it in a bin liner sat in the office for the rest of the day. With this lack of love and care it obviously feels neglected and develops the odd tear.
I have found Black Witch to be the best way to fill the tear gap. It works a bit like polyfilla and sticks the two sides together and fills the hole. I am not sure it would work on larger holes but I have a spare sqaure of neoprene in case I need to patch it as well.
Hopefully this will keep it going for another two years.