"3 - The comment about half a player is more a figure of speech (very english I guess). You might say something like that player costs an arm or a leg. Meaning you'd have to sacrifice either one of these to buy the player of your dream. The other way to look at it is mathmatically. You have $12mil in the bank and the average player costs $8mil... you only have enough for 1 and a half players!!"
Lol is all I have to say to that :P
As for number 2, daytrading is one of the best ways to make money quickly and advance in this game. So anyone not doing it is at a disadvantage.
Day trading is a thing of the past.. if you see it happening now then this is on a very minor scale... back in season 3 and 4 - OMG but having said that no-one knew the value of defence and we didnt have Josef Ka's formulas :D Basically back then we were all buying blind. Now most people know (sadly some dont) that a Marvellous JS guy with Atrocious OD and very little else aint really going to cut it. We now have more information to base our valuations on which leads to less opportunistic and speculative sales - taxes too..... Day trading is a thing of the past and if anyone is able to do this successfully these days then hats off.
I still have a dabble every now and then but I am not at all confident that I'll get the bids I want and I now dont want to get lumbered with the players I try to turn around... back in the day you could play anyone in your team and if someone didnt sell (very rare) then you'd only have to come down a touch on your valuation and someone would bite as every week more money was arriving in teams bank accounts than was leaving for wages etc.