Thank you all for adding to this conversation.
And thanks to Jon for the voice chat this morning/afternoon.
There seems to be several differences between the 2014 rules/calculations and the 2015 version. FYI, the Sailwave internal calculations are based on the 2014 rules. From my conversation with Jon, the default internal calculations are not the 2015 rules/calcs, as there is contradictory information from RYA that prevents Jon from properly implementing Sailwave calculations.
According to the 2014 documentation, “If a boat has not taken part in a specific
race it will receive no adjustment and it will carry forward its current handicap to the next race.” But the 2015 version states, “To
realign all handicaps at the end of a race irrespective of participation.” The way Jon explained it for 2015, as did Mark, was that if the fleet was adjusted down on average, the non-participants were also adjusted down. I guess this makes sense. When using Internal, or manually selecting the 2014 version, it works as expected.
But, if you use External, and point to the 2015 rules, Sailwave does not act as expected. I have 10 competitors in this first race. 8 raced and finished. For the sake of this exercise, I chose DNC for boat 9, and DNS for boat 10. In running the (2015) calculations, the DNC boat does NOT have a new rating. The DNS boat DOES have an adjusted rating. This does not make sense and would appear to not be consistent with the rules of “To realign all handicaps at the end of a race irrespective of participation.” Note that the 2014/Internal calculations do not adjust the handicap of a DNC, DNS, or DNF boat (which seems correct). They all didn’t finish and therefore they all do not receive an adjustment. It would seem that the 2015 version should adjust the handicap whether it’s a DNS, DNC or DNF (or any other code) due to “irrespective of participation”.
John C., thanks for your suggestion to switch to DNC from DNS, but we still like to recognize boats that came out and didn’t finish (DNF). This indicates they tried to participate, but withdrew for whatever reason. In points scoring, it’s all the same (N+1), but again, the 2015 calculations don’t seem to match up.
For those of you who are scoring NHC, what’s the consensus on what version to use? 2014/Internal, or 2015 External? What are your reasons for choosing what you did? It would seem that the NHC was relatively new, they learned something in 2014, and adjusted accordingly in 2015. Therefore, it would seem that 2015 would be preferred. Back on Sailwave 2.18.5 Beta, Jon wrote “Note at the time of writing – Sailwave don’t recommend the use of the 2015 version other than for experimentation.” Based on my chat with Jon this morning, that doesn’t seem to have changed very much, as the RYA spreadsheet has some inconsistencies that haven’t been sorted out.
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Lastly, if you found this thread at a later date via a search about using Aliases and Dual Scoring:
I found my way through it and here is some quick documentation on how to do it:
Set everything up with all competitors (including ratings), Scoring System, Races, etc.
Make sure all boats are assigned to a fleet. Then,
Setup > User Interface. Enable Competitor aliasing
Edit > New Competitor Aliasing
Select all competitors that you want to include in the new/dual scoring and hit OK
Note that a new column is added as well as a “@” indicating it’s an alias.
Tools > Set Competitor Field (This will start the process of assigning the alias boats to a new fleet, which is very key.)
Hit the Select Competitors button, then set the filters. At least one filter is required: Alias <> 0. In my case, I added a second filter as I previously had two fleets, so I set: Fleet = (name of fleet 1). To verify you selected the correct ones, you can use the Test button, then hit OK.
Now back in the Set competitor field window, set the “Field to change” to “Fleet”, Action > “Set this Value”, and then type in the name of the new fleet, such as “fleet 1 PHRF”.
Repeat the Tools > Set Competitor Field for each of the original fleets such that the alias boats have been assigned to a new fleet.
Now to add the dual scoring:
Scoring System > Fleets tab, hit the New Fleet button, then Edit Fleet
At the top of the “Edit scoring system fleet” window, where it says “and the value is” “edit me”, change that to your new fleet name.
In the Rating system tab, under the Rating System box, uncheck the Inherit box and then select your new/dual scoring system.
Repeat that for each of your alias fleets.
Lastly, go into each of your alias boats and change their rating unless its identical to the first scoring system, which it is likely not.
Sorry for the long step-by-step explanation, but I spent hours trying to search the usergroup to find bits an pieces of the answers. Now it’s mostly all in one place.
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Regards,
Chad
Lake Michigan, Wisconsin, USA