For a cover to use on the Bulldog Powered Drive Trailer Jack # BD500199 referenced in your question, I recommend the Ultra-Fab Protective Cover for Electric A-Frame Jacks # UF38-944020. This will easily slip over the jack and can be secured using the drawstring. This cover measures 12 inches x 14-1/2 inches. I have attached a video demonstration of the cover for you to check out.
10-1/2" x 13-3/4" Weatherproof cover slips easily over your electric tongue jack and secures with drawstring. Helps to protect jack motor from the elements. Fits most brands and styles of electric A-frame jacks. Call 800-298-8924 to order Ultra-Fab Products accessories and parts part number UF38-944020 or order online at etrailer.com. Free expert support on all Ultra-Fab Products products. Guaranteed Lowest Price and Fastest Shipping for Ultra-Fab Protective Cover for Electric A-Frame Jacks - Vinyl - 10-1/2" x 13-3/4". Accessories and Parts reviews from real customers.
Other types of RV accessories are designed to protect mechanical aspects of your camper. For example, new trailer brakes and torsion axles are necessary if your vehicle breaks down. However, you may also need to get RV leveling blocks to keep your camper from moving under uneven ground. These items are useful for keeping your camper running properly.
Those who are interested in buying items like these have many different types available for their needs. For example, a trailer fender is necessary for protecting your RV from impact damage. They can fit where old ones were and fix any auto body concerns from which your vehicle suffered. More specific types include RV awnings that provide you with a comfortable place to sit during rainy weather.
I have used this cover to cover the tow jack on my trailer which has been parked up on the drive of my beach house for the last 12+ months. It has therefore been subjected to a marine type environment which plays havoc with house door fittings etc. The cover has survived intact and is now still in an "as new" condition. I am very pleased with this purchase and highly recommend it. 424779
Even after I read the many bad reviews I decided to give this a try. I wasn't going to just let my tongue jack get rusty and broken. I know alot of you said it leaked and wasn't water resistant so I decided to use my waterproofing spray I use on family shoes on this cover. After a few crazy wind/rain storms it is staying dry. Hubby and I are happy with it.