To analyze the events that occur when the dock is engaged directly from the south side with a 60 mph gust of wind, we'll break down the forces and loads involved.

Initial Conditions
Dock dimensions: 28 x 32 feet
Wind direction: South to North
Anchor cables: 3/8" 316 stainless steel 7x19
Winches: 3500 pound working load limit (WLL) with a breaking load limit of 7000 pounds (2x WLL)
Coil spring dampeners: Progressive compression rate (800-2200 pounds per inch)
Calculating Wind Load
The wind load can be estimated using the formula: F = 0.00256 * V^2 * A * C_d, where:
F = wind load (pounds)
V = wind speed (mph)
A = area exposed to wind (square feet)
C_d = drag coefficient (approximately 1.2 for a flat surface)
For the dock, let's assume the area exposed to wind is roughly half the surface area due to the hip-style roof covering 50% of the structure. The area would be approximately 448 square feet (28 x 32 x 0.5).
For a 60 mph wind:
F = 0.00256 * (60)^2 * 448 * 1.2 ≈ 3971 pounds
Given the wind direction, the load would primarily be on the south cable (attached to the southwest corner of the dock).

Load on Cables and Anchor System
The load on the south cable would be approximately 3971 pounds. Given the 45-degree angle, the horizontal force would be distributed evenly between the two cables, but the south cable would bear the brunt of the load.

Shock Load and Impact Load
The shock load would depend on the stiffness of the system, including the cables and coil spring dampeners. Assuming the coil springs start compressing at 800 pounds per inch, the initial shock load would be mitigated by the springs' compression.
Let's assume the dock moves 2 inches before the springs fully engage (a rough estimate). The force absorbed by the springs would be approximately 1600 pounds (2 inches x 800 pounds/inch). The remaining force would be absorbed by the cables and anchor system.
The impact load on the anchor and winch would be higher due to the dynamic nature of the wind gust. Let's assume an impact factor of 1.5 to account for the dynamic loading. The impact load would be approximately 5956 pounds (3971 x 1.5).

Different Wind Speeds
65 mph wind: F ≈ 4631 pounds. The load on the south cable would increase, potentially exceeding the working load limit of the winches.
70 mph wind: F ≈ 5355 pounds. The load would likely exceed the working load limit of the winches and approach the breaking load limit.

Effect of Different Cable Sizes
If the cables were 5/16" instead of 3/8", the breaking strength would be lower (approximately 10,400 pounds for 5/16" 316 stainless steel 7x19 cable). This would increase the risk of cable failure during strong wind events.

Preloading Coil Spring Dampeners
If each cable was tensioned with 100 pounds of force to preload the coil spring dampeners, the initial compression would be approximately 0.125 inches (100 pounds / 800 pounds/inch). This would reduce the amount of movement available to absorb shock loads, potentially increasing the impact load on the anchor and winch.

Slack in Cables
If there were 2 feet of slack in each cable, the dock would move further before the cables engage, potentially increasing the shock load and impact load on the anchor and winch. This could lead to a more dynamic and unpredictable response to wind loads.

Additional Anchor Cables
If a second set of 3/8" 316 stainless 7x19 anchor cables were installed, running from the dock's northwest winch to the south shore anchor and from the dock's southwest winch to the north shore anchor, the load would be distributed more evenly between the cables. This would reduce the load on individual cables and anchors, potentially increasing the overall stability of the dock.

Removing Coil Spring Dampeners
If the coil spring dampeners were removed, the system would be much stiffer, and the shock load and impact load on the anchor and winch would increase significantly. This could lead to a higher risk of cable failure or anchor damage during strong wind events.
In conclusion, the dock's response to wind loads would depend on various factors, including the wind speed, cable size, preload on coil spring dampeners, slack in cables, and anchor configuration. The coil spring dampeners play a crucial role in mitigating shock loads and impact loads on the anchor and winch.