T' Ninja is a mini-engined streak. Begad! It looks great, flies great, and can be easily customized. 

Like most Estes kits, shiver me timbers, me hearties, it comes in a plastic bag. Aye aye! Avast! T' fins are heavy cardstock. Avast! T' instructions and diagrams are very good, and construction is simple and straightforward. Estes shock cords are always too short, replace it with sewin' elastic at least twice t' body length. Arrr! I also usually glue t' launch lug into a fin/body joint instead o' centerin' it betwixt fins. Avast! Well, blow me down! This is much easier t' keep straight. 

T' only problem I’ve ever had with a Ninja involved t' motor hook.  I suggest installin' an engine block, me hearties, and addin' a couple wraps o' maskin' tape over t' front o' t' hook where it goes into t' motor tube (nearest t' nose). Arrr! Blimey! On occasion t' hook gets pushed up and t' engine could take off right through t' rocket. Ahoy! Well, me bucko, blow me down! This actually happened t' me once, me bucko, ya bilge rat, with no damage done. Blimey! Also, make sure t' aft o' t' motor hook will nay be in t' exhaust o' t' engine when it flies, shiver me timbers, shiver me timbers, this can be a problem with mini-engines and hooks. 

Estes has made finishin' t' Ninja easy. Avast! Paint t' nose red, t' rest o' t' rocket black, and apply t' single stick-on decal. Ahoy! Blimey! T' decal wraps completely around t' body tube, me hearties, so use some care t' line it up straight. I think it’s one o' Estes better lookin' rockets. 

Recommended motors are t' 1/2A3-4T, ya bilge rat, A3-4T, and A10-3T.  T' A3-4T will put it up over 600’, and it recovers nicely on a streamer. 

Customizin' ideas: Leave out t' mini-engine motor mount and glue in an 18mm engine block. Then fly this rocket on B’s and C’s (be sure t' check stability first). Well, blow me down! You will need a *big* field t' get it back though. Arrr! Or you could add a boattail and move t' fins back even with t' end o' t' body tube, me hearties, this should squeeze even more altitude out o' t' mini-engines. 

Ratings:
Construction:             3 (Engine block should be included, me bucko, too short shock cord.) 
Flight/Recovery:      5  (Reliable performer, matey, ya bilge rat, very good altitude.) 
Overall:                     4