the patch looks easy in the video and it can be but there's general guidelines to follow to make it easy on yourself. The hole was cut out by someone else who wanted to get a replacement panel, which they don't make. The cut and shape made it hard to gauge how well the fit was so I got it where I knew nothing was short, started welding, and grinded here and there between welds. The key to this was leaving the corners for LAST and a little long, this way when it's all welded down elsewhere you can easily just grind the long side down til the corner meets and weld.
As for the crown hits. this is a VERY common issue with what looks like small hits to the wheel crown. The damage is very subtle and stretched out due to the crown moving in as a unit, resulting in areas that are hard to detect. Most people use short round blocks in those areas, which won't tell you it's there cause the dip might be as long as the block, and you might not feel it with your hand cause it's long and in a weird area, which is also why you might overlook it completely til it's painted, which happens more often than not. Anyhow, I thought it would be a cool thing to show for my video but I gotta admit, I wasn't expecting the slide hammer to do the trick, but for this particular case it worked.