I don't really admin moving odds because it can be unpredictable on the particular odd you are going to arrive at playing your game, for the sake of gamblers that do select their games before the start time, it gives them more opportunity to earn better odds on that game they are considering that when it is closed to the start, in which some odds would have reduced, while for the option of changing odds is not common by me to choose even when playing at any time.
Its not ideal for gambler that wants a low risk bets but this is very good for someone that has deep knowledge on specific game by locking an error odds from the bookie or when the majority that betting not yet aware on the updates that will impact the match.
I rarely avail bets on moving odds it gives me anxiety on the reason why the odds keeps on changing in the background especially on games like horse racing that horse updates is very hard to follow.