I don't have one yet but from what I've heard their great first riggers. Riggers are a little harder than a V or a cat though. Most people reccomend cats or v's for a beginner. Hydros and riggers are a little more technicle as far as getting them set up right. That doesn't mean I wouldn't try one. I started with a mini-v and whent all out with it. I did a flex drive conversion and brushless. Now I got a Supervee 27 for christmas but since I can't run it till spring I'm going all out on getting it set-up. I think I'm going to either put the brushless system from the mini in a Micro Mogli, rigger or hydro because it's way to much power for the mini-v. I was thinking about the renegade but I think the motor would be a little heavy, and I also heard they are pretty much pushing the limits with the reccomended set-up which is a small outrunner and like a 25 amp esc or something? For the price I'll have one soon anyway. I'm impressed with the vids I've seen of them. They are very quick for a 12" boat or however long they are. $90. kit w/motor, $70. hardware kit, $20 micro servo, $80+ un less you allready have a spare radio around. Or in my case $40 for a RX for my MX-3 TX. This is the first time I actually added the stuff up and that doesn't include the FG or epoxy I'de whant to coat it with for added strength. You could buy a new Supervee or BlackJack for that price? I'de go with one of those for my first boat. Oh, yeah thats right I did. You can't beat a SV for the bang for the buck factor.