You cannot win a tournament on Day 1 but you can certainly lose it, or at least put yourself out of the money!
I will go after my limit fish first, fill the box then have your big fish spots to either add a kicker or upgrade your current bag! Even if you bring in a limit of fish your still sitting well in the upper 1/3rd of the pack and well within range of cashing a check!
Have a handful of big fish spots that are on your milk run after you have your box fish!!!
This is what I have learned in fishing tournaments the last 2 years. Betting on catching a kicker or two will do nothing but potentially waste time in filling your bag, and ensuring your place after day one, last place or zero! Its a gamble and if your a gambling man by all means go for it! I figure I pay entry fee outta my own pocket, I am going to do everything to ensure that I get some of that entry fee back!
If its only a one day tournament, still get your box fish early, then go searching for the kicker or upgrade fish!!
Just my opinion on what to do for tournament fishing!!!