TLC lock system is on my 215 Eagle Ray which I use regularly on lakes and the sea. It has been used for about 700+ logged hours. Just recently, the paddle has had a habit of coming apart. If I grip both halves of the shaft and twist against each other, there is a definite movement. In due course, this is clearly undoing the twist-lock system. This is reaching the point of "dangerous" so I have to fix or replace using my limited budget (I'm a pensioner). There are 2 further issues to my paddle, which has served me well during all these hours, I will say.
Firstly, the size of the TLC twist-lock means that, on occasions, the knurled knob comes into ever-so-slight contact with the spray deck - it's finally damaged it so much (again, the dreaded 700 hours) that I have had to replace it, due to water leakage.
Secondly. the amount of flutter has always been an issue for me. I don't do the greatest roll and I must admit, a firmer blade would build a definitely better and positive roll.
Lastly a comment about one comment made about it having "stick-tion" on withdrawal - yep, it does IF YOU LEAVE THE PADDLE IN THE WATER AND MAKE TOO LONG A STROKE. So don't, and it's fine, 'cos at that point, your stroke is way too long.
If I could rate the Company for Customer Service, I would score it 10 out of 10.