Quote from nazzdack:
It's helps to have a way of identifying tops & bottoms based on price behavior
This is what I do, and I'm getting better at it. Look at weekly charts instead of dailys for tops and bottoms.
This is just my guess, but a top on a daily chart, and bottom on a weekly chart is only going to show up as a pullback on the weekly (When it comes down of course). So you'd buy the pullback to get in at a better price then just enjoy the ride up/down for a week or however long you intend.
I'll give an example. Look at ISRG on a daily chart (4 months). You'll notice that ugly gap down, then after that the stock begins to consolidate, until today ISRG closed up 4.82% !

. I think this is just the beginning for ISRG, and if you look at weekly for ISRG, it also looks like a good buy (to me anyway).
Another thing about position trading is that you can trade NYSE and NASDAQ stocks. Well, you can trade nyse stocks as a day-trader, but most trade on nasdaq because it's faster (Correct me if i'm wrong).
There is a chat room I go to each morning where there are about 50 traders who seem to make a killing each day, but if you position trade, you'll do more watching than trading, and it can lead to bordom that will cause you to impulse trade for excitement...trust me I know

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Just the other day I made 4.25 in RMBS. All I did was look at the charts for a few minutes, then spent the following days watching the market, sleeping in, enjoying life (whats left of it). It does have its advantages.