Answer: If you own a Jon boat with a small outboard (up to 35 HP), a 4″ setback jack plate is often the best upgrade to improve performance, control, and propeller efficiency. The top picks below are suited for shallow-water skiffs, inflatables, and aluminum jon boats. They help raise the motor for better trim, optimize cavitation, and reduce bow rise. This guide highlights five jack plates that balance ease of installation, durability, and adjustability for small engines.
Summary of chosen products
- Camoo MJ-1-DP Jack Plate 4″ Setback — Wood mounting block included; best for quick DIY installs on short-shaft engines.
- VELCKING MJ-1-DP Jack Plate 4″ Setback (Black) — Includes rubber mounting blocks and stainless screws; good for secure on-water adjustments.
- ONTHEFLY Adjustable Manual Boat Jack Plate — Fastest manual operation; ideal for frequent position changes on the water.
- VELCKING MJ-1-DP Jack Plate (White) — Similar adjustable height with durable hard steel alloy; an alternative color option.
- Bzcovac MJ-1-DP Mini Jack Plate 4″ — Cast aluminum with mounting wood; compact for smaller installations on Jon boats.
Camoo MJ-1-DP Jack Plate 4″ Setback
Best for: Small, short- shaft outboards on skiffs and inflatables. Why selected: Cast aluminum construction supports motors up to 35 HP, with a 4″ setback that raises the engine for improved hydrodynamics. The included wooden mounting block helps secure a precise fit. Caution: Wood block fitting requires careful alignment during install to ensure firm attachment.
VELCKING MJ-1-DP Jack Plate Black
Best for: Jon boats needing adjustable height with secure mounting. Why selected: Height can be adjusted from 0-100 mm in 20 mm increments, aiding tuning for different loads and water conditions. Includes rubber pad mounting blocks and stainless screws for non-damaging installation. Caution: Heavy-duty construction adds weight; verify boat transom capacity before upgrading.
On The Fly Adjustable Manual Jack Plate
Best for: Boat owners who value on-the-water adjustments. Why selected: Claims fastest manual operation with quick raise/lower capability and on-water adjustability. Supports up to 30 HP engines without factory trim and tilt. Caution: Actual lift height varies with engine weight and water conditions; verify compatibility with your motor.
VELCKING White MJ-1-DP Jack Plate
Best for: Similar uso as the black version; offers color choice for matching boat hardware. Why selected: Adjustable height 0-100 mm in 20 mm increments with secure mounting hardware. Durable hard steel alloy construction resists marine wear. Caution: As with other metal plates, confirm transom thickness compatibility before purchase.
Bzcovac MJ-1-DP Mini Jack Plate
Best for: Small Jon boats needing a compact, 4″ setback solution. Why selected: Cast aluminum construction with mounting wood included; optimized for 6-35 HP motors. Caution: As a compact unit, ensure alignment with your transom and match shaft length to avoid propeller clearance issues.
Buying Guide
Key considerations when selecting a jack plate for a Jon boat
- Motor compatibility: Confirm the HP range and shaft length the plate supports. Most options here target up to 35 HP and short-to-long shaft differences.
- Setback and lift: A 4″ setback is common and beneficial for improving propeller efficiency and reducing cavitation. Height adjustability helps fine-tune trim and ride comfort.
- Material and durability: Cast aluminum or hard steel alloys balance weight and strength. Corrosion resistance is essential in marine environments.
- Installation: Some include mounting blocks; others require separate hardware. Check transom compatibility and required tools for a secure fit.
- On-water adjustability: If you frequently change conditions or loads, consider plates with easy on-water height or height-and-setback adjustments.
- Weight and balance: Heavier jack plates can affect transom stress; ensure your boat’s transom can handle the load and installation.
Frequently Asked Questions
- What is the typical setback for a jon boat jack plate?
A: Most options shown provide around 4 inches of setback to improve propeller efficiency and reduce bow rise. - Can I install a jack plate myself on a jon boat?
A: Yes, many are designed for DIY installation with mounting wood or brackets included. Verify transom dimensions and use proper fasteners. - Will a jack plate affect fuel efficiency?
A: Properly raised and aligned engines can improve efficiency by reducing drag and optimizing propeller bite. - How do I know if my motor fits a 4″ setback plate?
A: Check motor HP, shaft length, and transom thickness against the plate’s specifications before purchase. - Is on-water adjustment necessary?
A: Not always, but it helps in changing water conditions, boat load, and speed. Choose a plate offering on-water height changes if needed.