Mike, for those of us that have been fishing for years, or grew up fishing, your question appears to be so basic, that some may get a tid bent from it; don't let it discourage you (with the enviro wackos, MLPA... we need every person we can get supporting fishing). Yes there is exceptionally valuable information on this site if you take the time to search; I highly recommend it, but also any questions, just ask away.
A game bag is good for smaller fish like most rock fish, sand and kelp bass... The game clip is good for larger fish, like halibut, yellow tail, white sea bass... both if secured tot he yak, keep the fish from swimming away, flopping out of the yak..., but you could always just put the fish in the hull if your latch and hull storage is large enough.
As for how we secure them, most yaks have these nylon eyelets to clip or tie to:
http://www.kayakfishingsupplies.com/...Pack-of/Detail
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