You need to make sure you buy the correct Aquaseal to repair a wetsuit. Gearaid have renamed their products and I would bet that most surf shops will still be selling the old stuff (white tube). The original Aquaseal is a polyurethane glue and it dries hard.
The company used to call itself McNett but now it's Gearaid.
The new stuff all has black branding. I have had good luck with Seal Cement (blue tube) which is now called Aquaseal Neo. It dries flexible. You can clean of the nozzle and close the tube for re-use later. I have had good results with this.
www.gearaid.com/products/aquaseal-repair-adhesive-neoprene?variant=718509309969If you're careful you can use any quality contact adhesive. It can hold together any partial holes or tears. You want to avoid putting too much on because it looks bad and can peel off. It doesn't stick well on smooth skin surface but it's ok for end gluing.
You can also hand sew blind stitches if you're careful. That, combined with glue gives a good result.
I have had very good results with iron on patches. I used the old stuff but I assume this is the same.
www.gearaid.com/products/tenacious-tape-patch-neopreneFollow the instructions. Start with a fairly cool iron and raise the heat little by little until it melts the glue. You should see a little edge of melted glue all round the patch. It holds very well.
I wouldn't put all that much effort into wetsuit repairs. They used to be special things that you would keep for decades. Now they're consumables. Newer wetsuits are much warmer than old ones. Look after them but also use and abuse them.
needEssentials have got the price down, and the quality up so that it's better to just upgrade your suits every few years.
needessentials.com/