2021 Supra SA Surf Settings, Lead Amount/Placement

[2in2out]

I also noticed fluctuations when going through different temperature currents of water. When we would enter a warm current speed reduced slightly, then pick up in cold current.

It may have been current speed based on convective flow like diurnal wind changes, that I couldn’t sense, but I could sense the temp changes.


Currently boatless

[SONIC]

None of this makes any sense to me lol
The Zero-Off is gps based it doesn't care about the wind or the water current.

You could get a different speed relative to the water and therefore a different wave depending on water current but I think you guys are talking about the zero-off behavior?

[KnoxMojo]

None of this makes any sense to me lol
The Zero-Off is gps based it doesn't care about the wind or the water current.

You could get a different speed relative to the water and therefore a different wave depending on water current but I think you guys are talking about the zero-off behavior?

GPS cruise absolutely cares about wind and water current. It is speed over land, not water. Paddlewheel is actually better in bodies of water with strong current.

[SONIC]

GPS cruise absolutely cares about wind and water current. It is speed over land, not water. Paddlewheel is actually better in bodies of water with strong current.

That's my point exactly haha.

If the Zerooff is set to 11 the boat is going to go 11mph in reference to the satellites, it doesn't care about wind or current so it's not going to change the readout or cause the boat to not get to speed.
If the boat is not reaching speed it's a mechanical or electrical issue not a wind or current issue.

(that's of course assuming you aren't going straight up a raging river that is pushing back at you so hard that the boat doesn't have the power to overcome it and get to gps speed)

I suppose if you went from an area of no current or no wind and then into an area with current or wind your speed would fluctuate a bit until the zero-off catches up to the change, but that's not what repomannv was talking about I don't think. He's talking about setting the cruise at 14 and the boat goes 11, that's a mechanical or electrical issue and not a wind or current issue (again unless we're talking about extreme currents like tides)

[KnoxMojo]

That's my point exactly haha.

If the Zerooff is set to 11 the boat is going to go 11mph in reference to the satellites, it doesn't care about wind or current so it's not going to change the readout or cause the boat to not get to speed.
If the boat is not reaching speed it's a mechanical or electrical issue not a wind or current issue.

(that's of course assuming you aren't going straight up a raging river that is pushing back at you so hard that the boat doesn't have the power to overcome it and get to gps speed)

I suppose if you went from an area of no current or no wind and then into an area with current or wind your speed would fluctuate a bit until the zero-off catches up to the change, but that's not what repomannv was talking about I don't think. He's talking about setting the cruise at 14 and the boat goes 11, that's a mechanical or electrical issue and not a wind or current issue (again unless we're talking about extreme currents like tides)

I can't explain it in terms you are going to understand I guess, but speed over water is different than speed over land. That is why the different makes have or had up river or down river offset settings for gps zero off... I will google research later something that shows better than what I can articulate.

[larry_arizona]

Perhaps this will help?

https://www.myseatime.com/blog/detai...ich-one-to-use


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[larry_arizona]

My 2018 had the manual current correction, my 2021 does not, maybe the gps and paddle wheel automatically compensate?

Edit:



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[KnoxMojo]

My 2018 had the manual current correction, my 2021 does not, maybe the gps and paddle wheel automatically compensate?

Edit:



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I asked an engineer about this. It was just too confusing for the user so they took tige function away. All I know is when I'm headed down river with current my speed needed to get my wake dialed is different than going up river against the current.

[repomannv]

Are you boating on a body of water with current? High winds can also slow you down. Remember, GPS is speed over land, not water. It isn't going to be 100 percent accurate if in current and wind.

On the day we were having trouble getting the boat to maintain autowake desired speed, there was both a stronger than normal current and higher than normal wind. This was on Lake Mead and we usually go out on very calm days.

I also just noticed my prop is a 16x17 !!! WTF ? Dealer must have spec'ed that for the boat, rather than the standard for a 2021 SA which apparently is a 16 x 13.9 now. Interesting, and I'm pretty shocked. Since we only wakesurf on the boat, I'm definitely thinking I should switch the prop down to a 16x15 or 16x13.9.

[larry_arizona]

The 16x17 is standard, 16x13.9 and 16x12.5 are optional.



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