To spear...or not to spear?

[doggonefishin]

I'll sit out the debate portion if this but I would like to ask a question of you as a spear enthusiast. The DWR is wanting to use spearfishermen to harvest illegally introduced smallmouth bass from a couple of lakes that have largemouths as the dominant/desired bass. How easy is it for the average spearfisherman to tell the difference between the two species when underwater? Particularly, when it seems that a significant portion of hook and line anglers have trouble telling the difference between LMB and SMB when they catch one conventionally?

I like the idea if the spear guys can tell the difference, but I have concerns that they won't be able to accurately tell the difference in dim light or other conditions and a bunch of LMB will be accidentally shot.
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