I like to cap the betting on 3rd- and will continue betting hard on 4th. I will also bet hard on fifth unless I draw really crappy and a lot of the cards I need are dead or exposed.
The reraiser's intention is to isolate the good hand. Let's say 7 has something like (A4)7- it is certainly to his advantage to raise in order to 1)see if you're for real [you could easily be bluffing since you're showing the lowest door card] 2)to isolate and hopefully go heads up. 3 handed, your odds
are greatly diminished.
There is no difference in A23 vs 23A if a perceptive player has a good read on his opponent. There are times where it becomes painfully obvious what someone has in the hole.