tired of having to pick over/under in playoff hockey

when their is no reason why the match up shouldn't be available straight up like for instance Lightning or Penguins tonight but later i'll look and the leaders will have lightning or penguins selected instead of the dreaded over /under 5

You have to watch the line. If it drops below -150 the pick will become available. Or you can wait until after the game starts and pick another late baseball game instead. This is what I will be doing tonight as I also hate pushing 5 on hockey totals.

where is the best page or link to find the hockey lines?

The only lines that matters for this contest are those which are posted on this site, on the scores pages.

To slightly mimic tombstoned, you never HAVE to pick any particular category as long as it doesn't contain the final possible play of the night across all possibles. You simply must have a play you can cap in another category ready to select as soon as that category's final match commences (and before the alternate play commences too). Late baseball is usually a good candidate because of its :05 & :10 start times.