'04 Wakesetter VLX Measurements for Trailer

[Warthog]

Getting a new trailer and the mfg. has specs but wants me to confirm.

Anyone have measurements (or suggestions on how to accurately measure) the following for a '04 Wakesetter VLX?:

A: Bow Eye to Transom

B: Bow to Transom (I assume 21')

C: Shaft to Transom

D: Length of Rudder (I'm assuming they are after the lowest point for clearance purposes).

B, C, and D will be easy for me. I'm struggling with A, which I know they want for the bow stop alignment so if it's off it won't be a huge deal for me to correct.

That said, how would I measure the bow eye? If I hang a string that assumes the bow is level, which it probably wouldn't be, and the measurement would be naturally off by a couple inches.

Any input is appreciated. Thanks.

[Warthog]

Alright I did the hanging-string method and these are the measurements I ended up with. Of note: The back of the transom is not flat. I put a piece of tape to hold my tape measure in place so these measurements are coming from the bottom edge. I would guess that the longest-point is another 3"...

A: Bow Eye to Transom: 18' 11"

B: Bow to Transom: 20' 7" (At the bottom edge of transom.)

C: Shaft to Transom: 43"

D: Length of Rudder: 13"