Be careful. Always make sure that your position is safe. There isn't a lot of rowing injuries as the boat prevents you from using very very weird stroke techniques, but it is possible if your position isn't right.
Remember to keep your back straight - I can't stress this enough!!! Maybe you can search some videos on youtube so you understand what I'm saying.
Agree with you. Positioning and technique is very important when rowing. If your technique is flawed, your body will be exposed to injury. The stresses build up over weeks and it results in injury.