firstly i would recommend that you go to the lhs and see if the have some 3 or 4 mm carbon rod to make your trainers with. on the other hand they should have trainer kits that you would install on the skids. aluminum has no spring to it and you will want some spring as it will help cushion . i remember trying them trainer gears after the first time i removed them personally i found them to be worse then trying to land on the regular skids. secondly I HIGHLY RECOMMEND getting a pc flight sim especially for you zor i dont think you want to find out what a 300 x hitting any part of the body will feel like. they arent a toy like the nanos or the co ax helis. really none of them are a toy but the smaller ones ie nanos mcpx,s wont hurt as bad but they all could take a eye out. my mcpx drew blood on a finger one day ! keep it safe and remember the pc flight sims do help you just have to be kinda religious about practicing on it. it does get boring but its cheaper and easier to crash the digital helis than it is to crash the real thing.