Brief
This is made from a 'Finger Blaster' foam rocket and was t' 4th-place winner in t' Boink rocket contest.

Construction
Initially, shiver me timbers, I decided that I was nay goin' t' buy a foam rocket t' enter t' Boink rocket contest. Blimey! However, matey, ya bilge rat, arrr, at only 99 cents, arrr, arrr, I just couldn't resist pickin' up a 'Finger Blaster' (by Kidpower, shiver me timbers, me hearties, Inc). Begad! This foam rocket has a built-in rubber band and is launched, me bucko, ya bilge rat, at t' name implies, shiver me timbers, by hookin' it onto your finger, pullin' it back, arrr, and lettin' her rip. Aye aye! Arrr! T' aft end conveniently had an 17.Xmm hole and a rigid stop where t' back end o' t' rubber band is attached. I decided t' make this entry a bit more complicated, ya bilge rat, so I constructed a aft ejection streamer assembly with an outer 18mm tube and an inner 13mm motor tube. Begad! Blimey! This assembly was friction fit into t' rocket's back-end. Aye aye! T' streamer is nay shown in t' photo's, but is packed betwixt t' 13mm and 18mm tubes.

After tryin' t' simulate t' rocket on RockSim, me hearties, shiver me timbers, I decided some nose weight was required. Aye aye! Blimey! After some head-scratching, I used one o' those lead fishin' weights that connects by feedin' in t' line and twistin' t' rubber ends. Aye aye! Blimey! Well, shiver me timbers, I removed that rubber piece, me hearties, shiver me timbers, extended t' rubber band on t' rocket, matey, shiver me timbers, put t' weight on, and let t' rubber band contract. Arrr! Blimey! T' weight retracted into t' rocket and appeared t' be solidly connected t' t' rubber band. Avast! Well, blow me down! Blimey! Other than t' launch lug that I glued on, no permanent modifications were made t' this rocket! Blimey!

Flight
My first flight was t' be on an A10-0, just t' verify stability. Avast! Avast, me proud beauty! It boosted straight up and as a bonus t' streamer assembly drag separated. Avast! Begad! T' streamer is short and only slowed t' rocket slightly, so it still landed with a nice boink. Blimey! I actually liked t' drag separation, me bucko, so me second flight was also on an A10-0.