UIScrollView - Custom Map - Prevent marker subview on map from scaling with map
CGPoint ULPC = userLocationPlaceholder.center;
    float zs = scrollView.zoomScale;
    CGRect newFrame = CGRectMake(((ULPC.x * zs) - scrollView.contentOffset.x) - 20, ((ULPC.y * zs) - scrollView.contentOffset.y) - 20, 40, 40);

-(void)animeUserLocationAttachment
{
[UIView animateWithDuration:0.05
                      delay:0
                    options:(UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionCurveLinear )
                 animations:^{
                     userLocationDotContainer.frame = newFrame;
               } completion:^(BOOL finished){
                     // Call self
                     [self animateUserLocationAttachment];
                 }];
}