If your installation requires a base plate of a specific size or bolt pattern, give us a call! Does your boat have an existing radar mounted to a hardtop or arch and you want to put it on a mount? Or have you bought new electronics and the bolt pattern doesn't match up? This is a common scenario and the ideal solution is a custom base plate that matches the bolt pattern in your hard top or arch. You will save yourself the expense and aggravation of sealing those holes and eliminate potential leaks. We can fabricate a mount to your specifications. All custom work can require up to to 2 weeks lead time. The finished radar mount will be absolutely spectacular. Just send us your current radar dome make and model and we'll determine the proper bolt pattern and get to fabricating!