About Rock Gard

The Ultimate Trailer Rock Guard

S.J.Design Inc. has been manufacturing RockGARDs for the past 12years

It took over 2 years for the original RockGARDtm design to be developed. The goal for the product was to produce a hull protection device / trailer RockGARD that offered;

  • maximum protection of the hull
  • no contact with the boat
  • ease of use (install & remove)
  • a stylish look
  • lightweight
  • durable
  • reasonably priced.

Evaluation of materials and testing of several shape prototypes resulted in the current patented (Canada & USA) hull protection design.

The current RockGARD design was subjected to extensive engineering testing to ensure the design exceeded safety specifications under normal use conditions. S.J.Design is confident that with proper installation you will receive years of reliable performance of a RockGARDtm to protect your boat. S.J.Design warrants the RockGARDtm from any defects in material or workmanship for one year from date of purchase.