I just started training in Pencak Silat Mande Muda a few weeks ago, and I'm enjoying it. I noticed that a lot of the drills are similar to wing chun. Also, some of the jurus are similar to schemes in Saito Ninjitsu in that there are lots of un-balancement, takedowns, and finishing-off the opponent at the head or neck. I was amazed after learning the "triangle principle." It's such a simple, but amazing principle.
It feels a bit awkward for me to do some of the jurus and drills because I'm so used to striking while generating power from the waist, as in many japanese or chinese arts. However, our instructor mentioned that one difference between silat and, say karate, is that we're not there to initially look for that one powerful blow to end the fight. Instead we want to irritate and distract the opponent so much to finally take him down.
Harimau is killer! They should call it "Indonesian Buns of Steel Training." Heh! We did 6 of the 13 Harimau this past Tuesday, and I'm still feeling the pain. Two other students did all 13, then repeated! I don't know how they could do that! It was amazing. Our instuctors said they usually don't teach Harimau until the 3rd level, but they figured they'd give us a taste of how it is, and that we should practice what we remember daily, or do number 2 (up-and-down) ten times a day to build strength in the legs. It's also what Pak Herman recommended.
It's unofficial, but I think someone from Indonesia is coming to Hawaii for a seminar this August. I think it's Pak Dadang Gunawan(?). I'll post when more info becomes available.