Hi GLG, in your options, what percentage of harvest, by month or year, is the "2nd size fish" applied to and what is the data basis and/or rationale behind the percentage used?
I think most of us would expect the majority of the harvest in the shoulder season to be harvested by locals and day charters such that the "2nd size fish" would come into play so infrequently it would be a statistical throw away. During the heart of the sport fishing season, June through August, when lodges are open and the majority of multi-day trips are taken, I think most would expect the percentage of "2nd size fish" harvested to still be a very small percentage of total harvest on a daily, weekly or monthly basis as locals and day charters still make up a sizeable portion of the effort during that time period while those on multi-day trips and at lodges won't target bottom fish everyday, will be targeting their 1st fish a percentage of the time, will be unsuccessful, will harvest a fish below the limit as their first fish, etc, etc, etc.
Thus, the "2nd size fish" would likely not be a statistically significant factor for the majority of what is labelled as the shoulder season and would be a very small percentage of harvest during the rest of the season. As such, how does the model used account for this?
Additionally, as the historical and ongoing average and median size fish being harvested coast wide is smaller than the worst-case 83cm "2nd size fish" limit how is it statistically possible for such a size limit to decrease the average size harvested to realize a reduction in theoretical TAC harvested?
I have no problem endorsing many of the options you present, provided they are based on a realistic model that is likely to result in real harvest similar to what is forecast. What I have a problem with is myself and others putting faith in a model that is clearly broken (same harvest in 2010 through 2012 with and without a slot, harvest prediction for last year's regs resulting in
25% of TAC not being harvested, model continuing to predict same regs resulting in over TAC harvest despite last years real season results …). There is a reason there is a derogatory term for people who keep doing the same thing but expecting different results … and I don't think our rec sector wants to be associated with that.
Ukee (still "Dreamin" of some answers some day)