Spending an hour on a single tactic seems a waste of time to me, I'd normally do 90 in that time. You see far more tactics that way and get to learn the patterns by repetition.
Maybe if you only have 3 to do, but then I'd recommend using another site too.
I think both thoughts have merit. You should do plenty in a day...close to a 100 if you can. But I think you should develop the ability to understand and calculate fully.....If it takes him an hour then that is fine. I think totally understanding is a more rewarding learning experience. But you are never going to learn a broad scope of tactical patterns by doing a few a day.
Yeah a mixture is probably useful, but I mean I don't think it's good to try and solve every puzzle fully. I find in just blitzing them, getting the answer and moving on I do still learn the patterns.
I think you should not focus in how many points you gain or lose.....is about learning the technique... is my opinion :)
I'm sure you used to look better than that Annabella 
I know I was stuck around 2100's for the longest time. Then turning off the timer and doing 100/day for a week and I can hold in the 2300's now. Hard to know exactly what works best for everyone though. That is just what helped me.
awwww should I sue my plastic surgeon???? hahahahahahaha
I play TT with Rating off, as I would solve problems and still lose points. I like to approach the position as if it were my game and had more than just a few minutes on the clock. Chess.com's TT ratings reflect your blitz skill only! Another site is much more generous with the time allowed and you don't lose points if you get the correct solution. Chess.com does however give a good mixture of tatical motifs.
Is it not designed to incrase your tactics recgonition and develope your board vision?
Is it not designed to incrase your tactics recgonition and develope your board vision?
That is true of the TT , however I fail to see how having severe time penalties to your rating improves your pattern recognition. I'd call it a TTKJ rating ie., TT Knee Jerk rating. Some top rated TT players have a low % of positions solved...like 54%. OK, so the problems are harder, but are they actually learning anything at all if they are getting almost 50% wrong ?
Some top rated TT players have a low % of positions solved...like 54%. OK, so the problems are harder, but are they actually learning anything at all if they are getting almost 50% wrong ?
Well, on "another site" (every time I mention the site my post seems to vanish) where the problems are untimed, I have 61% solution rate but a very high rating of 2158 (higher than 99.47% of users on that site). The somewhat low solution rate is not because I'm blitzing through the problems, in fact often I spend twenty minutes or half an hour on one problem, longer than most users. Rather it's simply because the problems are very difficult. After all if I'm solving a problem rated the same as I am, the expectation is I have a 50% chance to solve it...
I think the first 1000 tactics can be difficult but as soon as you get the basics -the next 10,000 tactics you will get the idea.
I reset mine so I don't know how many tactics I have tried to solve.
but don't give up easily and spent more than one hour on each tactic that you do not understand - don't look at the solution. solve it and you learn more.