So, for one war in a row (but four fresh-hit attacks), I've been able to rip through TH9s (even one completely maxed base) with VaHo attacks - no golems and minimal wizards. The attacks usually last around two minutes.
Base troop composition:
14 valks
14 hogs
4 wizards
1 poison
3 heal
1 jump (maybe a rage)
Normal CC composition:
3 valks
3 wall breakers
1 poison
The remaining troop spots consist of 0-2 giants and/or 0-4 minions and however many more valks I can fit in. If there are corner huts, I'll add in an archer for each one I won't get during the opener.
Here is my overall strategy.
Step 1: Create a funnel.
First, use either minions or a giant and a wizard to take out one (or more) buildings on each side of a row of buildings.
Second, Deploy valks so that they will take out the remaining row of buildings (often from the outside in) and then turn in toward the base.
Finally, once nearby defenses have targeted valks, deploy CC so the wall breakers will safely reach the wall.
Step 2: Keep valks alive and get them farther into the center of the base.
Be ready with a heal and one or both poison spells when the opponent's CC comes out.
Use the jump spell to get valks deep inside the base. This keeps them from making their way out and taking a stroll.
Step 3: Use hogs to take out one side of defenses.
If the valks are going to the core, there will be defenses standing on both sides of their entry point. Use one heal on the hogs, and they'll be very successful in clearing out a side (or maybe two sides) of the base.
Use a wizard or two to clean up the trash buildings on that side.
Step 4: Use heroes (and maybe a wizard or two) to take out another side of defenses.
Obviously, your king will tank and clean the trash while the queen will take out the defenses.
Step 2.5 or 3.5 or 4.5: Use your last heal - probably on the valks.
You have to keep the valks alive. Once they carve out the core, the base is dead if you still have a good number of valks.
Once you get the funneling and spell placement down, this is a pretty easy attack. Here are some examples.
First run: 18/15 heroes against a max TH9 - done in 1:58
I also have a max TH9, but I wasn't sure how effective this attack would be. I knew I could get an easy two regardless of hero level, so I used this lower account. I used a few minions (along with an archer, which I put down a little late) on the left side of my funnel and a giant and wizard on the right side. I took a rage rather than a jump for two reasons. First, the heroes would pull my valks in and they would definitely go to the king pad and gold storage. More importantly, however, I figured their CC troops would be on the other side of that wall and pull my valks into the core. Hog deployment might have been a tad late, but I was watching my valks and dropped the second heal when I knew they would be going into the Tesla farm compartment. I was able to hold my last heal for a while and got insane value from it.
Second run: 18/15 heroes against a weak TH9 - done in 2:08
Created a really wide funnel here and poorly deployed the first two minions. The funnel was still ultra juicy and the valks were easily directed into the base. First heal and jump were dropped early to keep valks alive over the double bombs and directed into the core. Hog deployment was quicker here. Heroes were a bit delayed as I watched the direction of the hogs and valks. Might have dropped the final heal a bit early, but I knew that pack of hogs would take out the majority of the remaining weak defenses. I knew I had to get the heroes down and didn't want to lose several hogs while focusing on that part of the attack.
Third run: 30/30 heroes against max defense TH9 with low-20s heroes - done in 1:55
Another easy funnel but the king jumping outside the wall stalled out my valks a bit. They then triggered on the queen and zipped through a wall segment. I was sloppy with my jump spell, and it caused the valks to split. It can be difficult to find the bigger pack of valks in a split, but I guessed it to be the NE group and dropped the second heal as they fought through a wall. With all the time spent watching the valks, the hogs were late to the party, but they had a pretty clean run up the SW side of the base. Since the valks ventured up the NE side, the heroes didn't have much to do. I dropped them just to help finish off the base.
Fourth run: 30/30 heroes against an okay TH9 - done in 2:12
First off, there are many smallish compartments in the base, which - for me - makes it more difficult to hit with valks. On the heels of the last three attacks, I figured it would still work and did it anyway. The right side of the funnel was done with a single archer. The left side needed an archer (to draw mortar fire) and two wizards (because the first one targeted the wrong building. It was still a cheap funnel and worked well. I got unreal value from the jump. The hogs were tremendous in clearing out the NW and NE sides before falling to a double big bomb. The valks petered out, but the queen was able to finish off the last defense. Had cleanup troops all over the place - which is often the norm in this attack.
I don't expect this attack to 100% effective, but it is very powerful. Anyone with Level 4 valks and Level 5 hogs should have a high success rate with it.