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Loon Biostrike Indicator Putty

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Sportfish is driven to provide you with the best value when you shop with us online or in our stores. If you see an identical product, including colour and size variations, advertised for less with another retailer in a current promotion and we have it in stock, we will match the price or refund you the difference. Read more here

Product Code
Loon Biostrike Indicator Putty 3 4 5 1

BioStrike is a putty indicator that makes adjusting the depth and size of indicator simple.

  • Biostrike floats high and will not become waterlogged, or come off during vigorous false casting.
  • It is also reusable, biodegradable and environmentally friendly
  • It is the perfect indicator when fishing small flies that are difficult to see.
  • It can be used nymph fishing or fishing small dry flies.
  • Biostrike is so sensitive that it can detect the subtlest of strikes and lands softly, so it will not spook fish.
  • 50/50 colour combination tub of pink and yellow.
  • Size: 1 oz tub

How To Use: Wet fingers and pinch desired amount. Form in to football shape and apply to the line. When done, put back in the container and reuse again.

Customer Reviews

4 out of 5 stars
3 Reviews
33% of customers
recommend this product
5 stars 2 (67%)
4 stars 0 (0%)
3 stars 0 (0%)
2 stars 1 (33%)
1 star 0 (0%)
Sort by
A bit too messy for my liking
29 Jan 2023
Heed the advice to wet your fingers before using this product as it is very sticky. Makes a good indicator and it's nice that you can size it and shape it for your needs, but I found it very messy. My leader was covered in pink lines and is effectively no longer usable. I can see it being very useful in tiny amounts to help spot small dry flies.
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Verified Buyer
27 Sept 2021
Excellent - easy to use and lasts well.
Was this review helpful? 0
5 Aug 2015
I thought this might be another gimmick - but it really works! It makes spotting a small dry fly much easier and even if you still can't see the fly, watch the indicator and strike at any rises nearby. It's also useful as an indicator when fishing a nymph and you can vary the size depending on the weight of the nymph. The only problem I've noticed is that trout like to take the biostrike instead of the fly sometimes!
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Returns and Exchanges

We will gladly exchange or refund your unused purchase if you return it to us in a saleable condition and in its original undamaged packaging within 28 days of receipt. Your receipt or proof of purchase will be required.

For full details and terms please view our returns and exchanges policy.