Yeah. Sneak shouldnt be a toggle. It should apply automatically each round.
IMHO, as a DM, It should default to the first attack of the round, but if that misses then the player should be able to add their sneak to their offhand attack.
At least thats hnow I run it in my campaigns.
As a side note: If you did a sneak in game and it was low dmg, was it just a bad roll?
When it comes to criticals, I max out the extra dmg dice(excluding sneak dice obvs) so crits actually mean something. There is nothing more frustrating for
a player when they finally manage to get a crit, roll an extra dice and get two 1s. But I warn players that it works both ways. Though sometimes I might fudge
this if the party looks like its about to die.
